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GLOSSARY

A AA Auto Answer AAB All-to-All Broadcast AAL Asynchronous Transfer Mode Adaption Layer AAP Applications Access Point [DEC] AAS All-to-All Scatter AASP ASCII Asynchronous Support Package AAT Average Access Time ABC Atanasoff-Berry Computer (First digital calculating mac ABEND Abnormal End ABI Application Binary Interface ABIOS Advanced BIOS ABS Absolute ABT Abort AC Automatic Computer ACC Accumulator ACD Automated Call Distribution ACDI Asynchronous Communications Device Interface ACE Advanced Computing Environment [SCO] ACF Access Control Field ACH Automated Clearing House ACIAS Automated Calibration Internal Analysis System ACIS American Committee for Interoperable Systems ACK Acknowledgment ACL Access Control List ACM Association for Computing Machinery ACMS Application Control Management System ACP Ancillary Control Program ACROSS Automated Cargo Release and Operations Service System ACS Access ACTS Automated Computer Time Service ACTT Advanced Communication and Timekeeping Technology [Seik ACU Automatic Calling Unit ADA Automatic Data Acquisitions ADC Adaptive Data Compression (protocol) [Hayes] ADCCP Advanced Data Communication Control Procedures ADD Automatic Document Detection [WordPerfect] ADF Automatic Document Feed ADI AutoCad Device Interface (driver) ADL Address Data Latch ADLAT Adaptive Lattice Filter ADMD Administrative Management Domain [X.400] ADP Automatic Data Processing ADPCM Adaptive Differential Pulse Code Modulation ADR Address ADS Application Development Solutions [AT&T] ADSC Address Status Changed ADSL Asymmetrical Digital Subscriber Line ADSR Attack, Decay, Sustain, Release ADT Application Data Types ADU Automatic Dialing Unit AE Above or Equal

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AEB Analog Expansion Bus [Dialogic] AF Auxiliary carry Flag AFC Automatic Font Change AFD Automatic File Distribution AFII Association for Font Information Interchange AFP Appletalk Filing Protocol [Macintosh] AGC Automatic Gain Control AI Analog Input AIA Applications Integration Architecture [DEC] AIF Audio Interchange Format AIIM Association for Information and Image Management AIN Advanced Intelligent Network [Bell Atlantic] AIP Application Integration Program AISB Association of Imaging Service Bureaus AISP Association of Information Systems Professionals AIX Advanced Interactive Executive [IBM] ALC Arithmetic and Logic Circuits ALE Address Latch Enable ALGOL Algorithmic Oriented Language (see IAL) ALR Advanced Logic Research, Inc. ALT Alternate (mode) ALU Arithmetic Logic Unit AMANDDA Automated Messaging and Directory Assistance AMD Active Matrix Display AMMA Advanced Memory Management Architecture [Everex Systems AMPS Advanced Mobile Phone Service ANCOVA Analysis of Covariance ANI Automatic Number Identification ANN Artificial Neural Network ANOVA Analysis Of Variance ANSI American National Standards Institute AO Analog Output AOCE Apple Open Collaboration Environment AOE Application Operating Environment [AT&T] AOL America Online AOS Add Or Subtract AP Adjunct Processor APA Adaptive Packet Assembly APAR Authorized Program Analysis Report [IBM] APAREN Address Parity Enable [IBM] APC Asynchronous Procedure Call APCUG Association of PC User Groups API Application Program Interface APIC Advanced Programmable Interrupt Controller [Intel] APL A Programming Language (Mathematics) APM Advanced Power Management [IBM OS2] APPC Advanced Program-to-Program Communications [IBM] APPI Advanced Peer-to-Peer Internetworking APPN Advanced Peer-to-Peer Networking [IBM] APS Asynchronous Protocol Specification APSE ADA Programming Support Environment APT Address Pass Through ARA Apple Remote Access ARCA Advanced RISC Computing Architecture ARCnet Attached Resource Computer Network ARL Adjusted Ring Length ARLL Advanced Run Length Limited

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ARM Advanced RISC Machine (processor) ARMA Association of Records Managers and Administrators ARP Address Resolution Protocol [Novell] ARPA Advanced Research Projects Agency ARPL Adjust Requested Privilege Level ARQ Automatic Repeat Request ARTIC A Real-Time Interface Copressor [IBM] ARTS Asynchronous Remote Takeover Server ARTT Asynchronous Remote Takeover Terminal ARU Audio Response Unit AS Autonomous System [Internet] AS3AP ANSI SQL Standard Scalable and Portable ASAP As Soon As Possible ASCII American Standard Code for Information Interchange ASIC Application-Specific Integrated Circuit ASIT Advanced Security and Identification Technology ASL Adaptive Speed Levelling ASN Abstract Syntax Notation ASP Association of Shareware Professionals ASPI Advanced SCSI Programming Interface [Adaptec] ASPS Advanced Signal Processing System ASR Automatic Send-Receive AST AST Research, Inc. (named from first initials of the fo ASYNC Asynchronous AT Advanced Technology ATA Advanced Technology Attachment ATDP Attention Dial Pulse ATDT Attention Dial Tone ATE Automated Test Equipment ATG Advanced Technology Group ATH Attention Hang-Up ATM Adobe Typeface Manager ATR Automatic Terminal Recognition ATS Administrative Terminal System ATTN Attention ATTRIB Attribute (also ATR) AT&T American Telephone and Telegraph AUDIT Automated Data Input Terminal AUI Attachment Unit Interface AUP Acceptable Use Policy [Internet] AUTO Automatic AUTOEXE Automatic Execution AUX Auxiliary AVA Audio Visual Authoring [IBM] AVC Audio Visual Connection [IBM] AVG Average AVI Audio Visual Interleaved [Microsoft] AVR Automatic Voice Recognition AWG American Wire Gage AWK (Unix language named after its authors... Al Aho, Peter AWS Advanced Workstations and Systems (group) [IBM] AX Architecture Extended A/D Analog to Digital A/P Accounts Payable A/R Accounts Receivable

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B B2X Binary To Hexadecimal [REXX] BAK Binary Adaption Kit [Microsoft] BAL Basic Assembly Language BAM Boyan Action Module BARTS Bell Atlantic Regional Timesharing BASIC Beginner's All-purpose Symbolic Instruction Code BASM Built-In Assembler BBS Bulletin Board System BCC Blind Carbon Copy BCD Binary Coded Decimal BCL Batch Command Language BCP Bulk Copy Program BCPL Basic Computer Programming Language BCR Byte Count Register BDOS Basic Disk Operating System BE Below or Equal BEL Bell BELLCOR Bell Communications Research BER Basic Encoding Rules [HP] BERT Bit Error Rate Test/Tester BF Bad Flag BFT Binary File Transfer BGE Branch if Greater or Equal BGP Border Gateway Protocol BGT Branch if Greater Than BHI Branch if Higher BHIS Branch if Higher or Same BI Binary Input BiDi Bidirectional BIM Beginning of Information Marker BINAC Binary Automatic Computer BIOS Basic Input/Output System BIS Business Information System BISDN Broadband Integrated Services Digital Network BiSYNC (See BSYNC) BIT Binary Digit BITNET Because It's Time Network BITNIC Bitnet Network Information Center BIU Bus Interface Unit BIX Byte Information Exchange (BBS) BKSP Backspace BL Backlit BLAST Blocked Asynchronous Transmission (protocol) [Communica BLE Branch if Less or Equal BLK Block BLMC Buried Logic Macrocell BLOB Binary Large Object BLOS Branch if Lower Or Same BMI Branch if Minus BMIC BusMaster Interface Controller [Intel] BMP Batch Message Processing Program BNE Branch if Not Equal BO Binary Output BoB Break-out Box BOM Beginning Of Message

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BOOTP Bootstrap Protocol [Internet] BORPQU Borland Pro Quattro BORQU Borland Quattro BOS Basic Operating System BOT Beginning Of Table BP Base Pointer BPB BIOS Parameter Block BPI Bits Per Inch BPL Branch if Plus BPS Bits Per Second BR Bad Register BRGC Binary Reflected Gray Code BRI Basic Rate Interface BSAM Basic Sequential Access Method BSC Binary Synchronous Communication BSCS Bachelor of Science (Degree) in Computer Science BSD Berkely Software/Standard Distribution BSF Bit Scan Forward BSI British Standards Institute BSR Bit Scan Reverse BSS Block Started by Symbol BSV BASIC Bsave Graphics (file name extension) BSY Busy BSYNC Binary Synchronous Communications (protocol) BT Bit Test BTAM Basic Telecommunications Access Method [IBM] BTB Branch Target Buffer BTC Bit Test and Complement BTP Batch Transfer Program BTR Bit Test and Reset BTS Bit Test and Set BU Branch Unit BUF Buffer BWM Block-Write Mode BYTE Binary Element String B/F Background/Foreground C C C Programming Language C2D Character To Decimal [REXX] C2X Character To Hexadecimal [REXX] CA Collision Avoidance CAD Computer Aided Design CADD Computer Aided Design and Drafting CAE Common Applications Environment CAG Column Address Generator CAI Computer Aided Instruction CAL Calendar CAM Common Access Method CAN Cancel CAP Central Arbitration Point CAPD Computing To Assist Persons With Disabilities [Johns Ho CAPS Capitals (Upper Case Letters) CARL Colorado Alliance of Research Libraries [Internet] CAS Column Address Select CASE Computer Aided Software Engineering

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CASL Crosstalk Application Scripting Language [DCA] CASS Computer Assisted Search Service CASSIS Classified and Search Support Information System CAT Computer Aided Testing CAT SCAN Computerized Axial Tomography Scan CATS Computer Assisted Training System CATV Community Antenna Television CAU Controlled Access Unit CAV Constant Angular Velocity CBC Cipher Block Chaining CBCR Channel Byte Count Register CBEMA Computer and Business Equipment Manufacturers Associati CBI Computer Based Instruction CBL Computer Based Learning CBMS Computer-Based Mail System CBR Constant Bit Rate CBT Computer Based Training CBW Convert Byte to Word CBX Computer-Controlled Branch Exchange CC Cluster Controller CCD Charged-Coupled Device CCFT Cold Cathode Fluorescent Tube CCITT Consultative Committee for International Telegraph and CCP Console Command Processor CCS Common Communications Support CD Carrier Detect CDA Compound Document Architecture [DEC] CDC Control Data Corporation CDDI Copper Distributed Data Interface CDE Common Desktop Environment CDL Computer Design Language CDMA Code Division Multiple Access CDOS Concurrent Disk Operating System CDPD Cellular Digital Packet Data CDR Call Detail Record CDRL Contract Data Requirements List CDS Current Directory Structure CD-I Compact Disk - Interactive CD-MO Compact Disk - Magneto Optical CD-R Compact Disk - Recordable CD-RDx Compact Disk - Read Only Memory Data Exchange Standard CD-ROM Compact Disk - Read Only Memory CD-RTOS Compact Disk - Real Time Operating System CD-V Compact Disk - Video CD-WO Compact Disk - Write Once CD-XA Compact Disk - Extended Architecture CD_CHRD Card Channel Ready [IBM] CE Cache Enable CEG Continuous Edge Graphics CEI Conducted Electromagnetic Interference CEPT Commission Europ‚enne Postal et Telephonique CERT Computer Emergency Response Team CFB Cipher Feedback CFV Call For Votes [Bitnet] CGA Color Graphics Adapter CGI Computer Generated Images CHAP Challenge Authentication Protocol (protocol)

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CHAR Character CHAT Conversational Hypertext Access Technology [Internet] CHCK Channel Check CHCP Change Code Page CHDIR Change Directory CHGRP Change Group CHKDSK Check Disk CHMOD Change Mode CHOWN Change Owner CHP Chapter CHR Character CHRP Common Hardware Reference Platform [Apple; IBM] CICS/VS Customer Information Control System/ Virtual Storage [I CID Configuration/Installation/Distribution CIM CompuServe Information Manager CIO Chief Information Offier CIOCS Communication Input/Output Control System CIP Command Interface Port CIRC Circular Reference CIS Card Information Structure CISC Complex Instruction Set Computing CIX Commercial Internet Exchange CJLI Command Job Language Interpreter CKD Count Key Data (device) CLAR Channel Local Address Register CLASS Client Access to Systems and Services CLC Clear Carry Flag CLD Clear Direction Flag CLI Call-Level Interface CLIST Command List CLK Clock CLNP Connectionless Network Protocol CLS Clear Screen CLTS Clear Task Switch Flag CLUI Command Line User Interface CLUT Color Look-Up Table [Macintosh] CLV Constant Linear Velocity CM Centimeter CMA Concert Multi-thread Architecture CMC Common Mail Calls CMIP Common Management Information Protocol CMIS Common Management Information System CML Computer Mananged Learning CMMS Computerized Maintenance Management Software CMMU Cache/Memory Management Unit [Motorola] CMOS Complementary Metal-Oxide Semiconductor CMP Compare CMPS Compare word String CMS Code Management System CMY Cyan-Magenta-Yellow (color model) CMYK Cyan-Magenta-Yellow-Black (color model) CNA Certified NetWare Administrator [Novell] CNC Computerized Numerical Control CNE Certified NetWare Engineer CNG Call Negotiation Tone CNIDR Clearinghouse for Network Information and Discovery and CNIDR Clearinghouse for Networked Information and Retrieval

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CNSS Core Nodal Switching Subsystem [Internet] CNV Conventional (pertaining to Memory) CNVT Convert CNX Certified Network Expert CO Central Office COBOL Common Business-oriented Language (See HLL) CODASYL Conference on Data System Languages (Group that designe CODEC Coder/Decoder COEM Commercial Original Equipment Manufacturer COFF Common Object File Format [Unix] COGO Coordinate Geometry (Programming Language) COL Collision COLD Computer Output to Laser Disk COM Commercial (organization Domain name) [Internet] COM1 First serial Port (asynchronous port) COM2 Second serial Port COM3 Third serial Port COM4 Fourth serial Port COMDEX Computer Dealers Exposition COMET Cornell Macintosh Terminal Emulator COMP Compare COMSAT Communications Satellite Corporation CON Console (includes Keyboard and Screen) CONFIG Configuration CONTONE Continuous Tone CORBA Common Object Request Broker Architecture CoREN Corporation for Research and Enterprise Network COS Compatible Operating System COSE Combined Office Standard Environment COSMIC Computer Software Management and Information Center [NA COSMOS Computer System for Mainframe Operations COTS Commercial Off-The-Shelf CP Copy Protected CPA Certified Public Accountant CPCS Check Processing Control System [IBM] CPE Central Processing Element CPG Clock Pulse Generator CPI Characters Per Inch CPI-C Common Programming Interface for Communications [IBM] CPL Current Privilege Level CPS Characters Per Second CPT Command Pass Through CPU Central Processing Unit CP/M Control Program for Microcomputers CR Carriage Return CRC Cyclic Redundancy Check CREN Computer Research Education Network CRF Cable Retransmission Facility CROM Control Read Only Memory CRT Cathode Ray Tube CRTC CRT Controller CR/LF Carriage Return/Line Feed CS Chip Select CSAR Channel System Address Register CSD Corrective Service Diskette [IBM] CSDS Packet Switched Data Service CSE Certified System Engineer

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CSG Constructive Solid Geometry CSL Computer Sensitive Language CSLIP Compressed Serial Line Interface Protocol [Internet] CSM Communications Services Manager CSMA/CD Carrier Sense Multiple Access/with Collision Detection CSNET Computer Science Network CSP Commercial Subroutine Package CSPDN Circuit Switched Public Data Network CSS Continuous System Simulator (Language) CSTA Computer-Supported Telephony Applications CSU Channel Service Unit CSV Comma-Separated Values/Variables CTB Cipher Type Byte CTI Computer-Telephone Integration CTOS Computerized Tomography Operating System CTPA Coax-to-Twisted-Pair Adapter CTRL Control CTS Clear To Send CTSS Compatible Time Sharing System CUA Common User Access [IBM] CUB Cursor Backward CUD Cursor Down CUE Custom Updates and Extras (card) [Egghead Software] CUF Cursor Forward CUI Character-Oriented User Interface CUP Cursor Position CUPID Completely Universal Processor I/O Design [AST] CUTE Clarkston University Terminal Emulator CUU Cursor Up CVF Compressed Volume File CVGA Color Video Gaphics Array CVIA Computer Virus Industry Association CVT Convert CVW CodeView for Windows CWD Convert Word to Double Word CWIS Campus Wide Information Service/System [Internet] CYL Cylinder CYMK Cyan-Yellow-Magenta-Black (color model) C&T Chips and Technologies C/D Control Data C/S Client/Server D D2C Decimal To Character [REXX] D2T2 Dye Diffusion Thermal Transfer (printing) D2X Decimal To Hexadecimal [REXX] DAA Data Access Arrangement DAC Data Acquisition and Control DAD Desktop Application Director [Borland] DAL Data Access Language [Apple Computer] DAM Data Acquisition and Monitoring DAO Data Access Objects [Microsoft] DAP Data Access Protocol [DEC] DARI Database Application Remote Interface [IBM] DAS Decimal Adjust for Subtraction DASD Direct Access Storage Device

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DAT Digital Audio Tape DATACOM Data Communications dB Decibel DB Data Base DB2 Database 2 dBA Adjusted Decibel DBCS Double-Byte Character Set DBM Data Base Manager DBMS Data Base Management System DBS Data Base Server DC Data Collection DCA Digital Communications Associates DCAF Distributed Console Access Facility [IBM] DCB Disk Coprocessor Board [Novell] DCC Digital Command Control DCD Data Carrier Detect DCE Data Communications Equipment DCF Data Communication Facility [IBM] DCI Display Control Interface DCL Declaration DCS Data Collection System DCT Discrete Cosine Transform DD Day DDA Domain-Defined Attribute DDB Device Dependent Bitmap DDC Digital Data Channel [VESA] DDCMP Digital Data Communications Message Protocol [DEC] DDCS Distributed Database Connection Services [IBM] DDD Direct Distance Dialing DDE Direct Data Entry DDEML Dynamic Data Exchange Manager Library [Microsoft] DDF Dynamic Data Formatting [IBM] DDK Device Driver Kit [Microsoft Windows] DDL Data Definition Language DDM Distributed Data Management DDN Defense Data Network DDS Digital Dataphone Service [AT&T] DEC Decrement DEF Desktop Functional Equivalent [Compaq] DEFRAG Defragment DEK Data Encryption Key DEL Delete DELSTR Delete String [REXX] DES Data Encryption Standard DET Device Execute Trigger DEV Device DF Data Field DFC Data Flow Control DFS Distributed File System DFT Diagnostic Funtion Test DFU Data File Utility DGIS Direct Graphics Interface Standard DHCP Dynamic Host Configuration Protocol DI Data In DIA Document Interchange Architecture [IBM] DIB Device Independent Bitmap DIBOL DEC Business Oriented Language

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DID Direct Inward Dialing DIF Data Interchange Format DIFFSEN Differential Sense DIIP Direct Interrupt Identification Port DIN Deutsche Industrie Norm (German equivalent of EIA) DIO Data Input-Output DIP Digital Imaging Processing DIR Directory (file) DIS Dynamic Impedance Stabilization [CompuCom] DISP Displacement (offset) DIT Directory Information Tree DIV Divide DIW D-Inside Wire [AT&T] DL Download (also D/L) DLC Data Link Control (protocol) [IBM] DLE Data Link Escape DLL Dynamic Link Library DLM Dynamic Link Module DLR DOS LAN Requester DLT Digital Linear Tape DL/1 Data Manipulation Language 1 [IBM] DM Distributed Memory DMA Direct Memory Access/Addressing DMAC DMA Controller DMD Digital Micromirror Device [Texas Instruments] DME Distributed Management Environment DMI Desktop Mangement Interface DML Data Manipulation Language DMM Digital Multimeter DMMS Dynamic Memory Management System DMOS Double-diffused Metal-Oxide Semiconductor DMP Dot Matrix Printer DMPC Distributed Memory Parallel Computer DMQS Display Mode Query and Set [IBM] DMS Data Management Software DMSD Digital Multistandard Decoding DMTF Desktop Management Task Force DMY Day Month Year DN Down DNC Direct Numerical Control DNIC Data Network Identification Code DNIS Dialed Number Identification Service DNS Domain Naming System DO Data Out DOE Distributed Objects Everywhere DOMF Distributed Object Management Facility DOS Disk Operating System DOSEM DOS Emulation DOW Day Of Week DO-IT Disabilities, Opportunities, Internetworking and Techno DP Data Processing DPA Demand Protocol Architecture [3Com] DPAM Demand Priority Access Method DPAREN Data Parity Enable [IBM] DPB Drive Parameter Block DPC Direct Program Control DPI Dots Per Inch

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DPL Descriptor Privilege Level DPM Digital Panel Meter DPMA Data Processing Management Association DPMI DOS Protected Mode Interface [Microsoft] DPO Data Phase Optimization DPS Document Processing System DPSK Differential Phase Shift Keying DPtoTP Display Coordinates to Tablet Coordinates (converting) DQL DataEase Query Language [DataEase International] DR Data Received DRAM Dynamic Random Access Memory DRAW Direct Read After Write DRDA Distributed Relational Database Architecture [IBM] DRDW Direct Read During Write DRI Digital Research Incorporated DRO Data Request Output DRV Drive DR.BOND Dial-up Router Bandwith On Demand [NEC] DS Data Segment DSA Directory System Agent [HP] DSAP Destination Service Access Point DSDD Double Sided, Double Density (diskette) DSE Data Storage Equipment DSEA Display Station Emulation Adapter DSECT Dummy Control Section DSHD Double Sided, High Density (diskette) DSIS Distributed Support Information Standard DSL Dynamic Simulation Language DSMA Digital Sense Multiple Access DSOM Distributed System Object Model DSP Digital Signal Processing DSQD Double Sided, Quad Density (diskette) DSR Data Set Ready DSS Decision Support System DSTN Double Supertwisted Nematic DSU Data Service Unit DSW Data Status Word DTA Disk Transfer Area DTD Document Type Definition DTE Data Terminal Equipment DTL Diode-Transistor Logic DTMF Data Tone Multiple Frequency DTP Desktop Publishing DTR Data Terminal Ready DTS Distributed Time Service [HP] DTV Desktop Video DTVC Desktop Video Conferencing DU Disk Usage DUA Directory User Agent [HP] DUAT Direct User Access Terminal DVI Digital Video Interactive DVMRP Distance Vector Multicast Routing Protocol [Internet] DWG Drawing DXC Data Exchange Control DXF Drawing Exchange Format D/A Digital to Analog D/R Direct or Reverse

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E EA Extended Attribute [OS/2] EARN European Academic Research Network EAROM Electrically Alterable Read Only Memory EARS Electronic Access to Reference Services EATA Enhanced AT Bus Attachment EBC EISA Bus Controller EBCDIC Extended Binary Coded Decimal Interchange Code [IBM] EBI Equivalent Background Input EBT Electronic Benefits Transfer ECAL Enjoy Computing And Learn ECB Electronic Codebook ECC Error Check Code ECD Enhanced Color Display ECHO European Commission Host Organization [Internet] ECL Emitter Coupled Logic ECMA European Computer Manufacturers Association ECNE Enterprise Certified NetWare Engineer [Novell] ECP Enhanced Capabilities Port [Microsoft] ECTL Electronic Communal Temporal Lobe ED Erase Display EDA Embedded Document Architecture [Go Corporation] EDC Enhanced Data Correction EDDC Extended Distance Data Cable EDGAR Electronic Data Gathering, Analysis and Retrieval EDI Electronic Data Interchange EDIFACT EDI for Administration Commerce and Transport EDLC Ethernet Data Link Control EDLIN Editor (Line Text) EDM Engineering Data Management EDO Extended Data Out EDOS Enhanced DOS for Windows EDP Electronic Data Processing EDPM Electronic Data Processing Machine EDR Extended Distinctive Ring EDRAM Extended Dynamic Random Access Memory EDSAC Electronic Delay Storage Automatic Computer EDSI Enhanced Small Device Interface EDU Education (organization Domain name) [Internet] EDVAC Electronic Discrete Variable Automatic Computer (First EEC Extended Error Correction EEG Electroencephalogram EEM Extended Memory Management EEMS Enhanced Expanded Memory Specification EEPROM Electrically Erasable Programmable Read-Only Memory EES Escrow Encryption Standard EFA Extended File Attribute EFF Electronic Frontier Foundation EFI Electromechanical Frequency Interference EFL Emitter Follower Logic EFTS Electronic Funds Transfer System EGA Enhanced Graphics Adapter EGP Exterior/External Gateway Protocol EHLLAPI Emulator High Level Language Application Programming In EIA Electronic Industries Association

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EIS Executive Information System EISA Extended Industry Standard Architecture EL Electroluminescent (display) ELF Extremely Low Frequency ELS Entry Level System EM Electronic Mail EMA Electronic Mail Association EMACS Editing Macros [Unix] EMB Extended Memory Block [LIM/AST] EMBARC Electronic Mail Broadcast to a Roaming Computer [Motoro EMC Electromagnetic Compatibility EMI Electromagnetic Interference EMM Expanded Memory Manager EMR Electro-Magnetic Radiation EMS Electronic Mail System ENDS Ends Segment ENIAC Electronic Numerical Integrator Analyzer and Computer ( ENQ Enquiry ENSS Exterior Nodal Switching Subsystem [Internet] EOA End of Address EOB End of Block EOC End of Conversion EOF End of File EOI End or Identify EOJ End of Job EOL End of Line EOM End of Message EOR Exclusive OR (Also XOR) EOS Earth Observing System [NASA] EOSDIS Earth Observing System Data and Information System [NAS EOT End Of Table EP Evolutionary Programming EPL Effective Privilege Level EPLD Electrically Programmable Logic Device EPM Enhanced Editor for Presentation Manager [IBM] EPP Enhanced Parallel Port EPROM Electrically Programmable Read Only Memory EPSF Encapsulated PostScript Files EPV Entry Point Vector [HP] ERAS Electronic Routing and Approval System [Hughes Aircraft ERIC Educational Resources Information Center [Internet] ERLL Enhanced Run Length Limited EROM Erasable Read Only Memory ERR Error ES Extra Segment ESA Enterprise Systems Architecture [IBM] ESC Escape ESCM Extended Services Communications Manager [IBM] ESCON Enterprise System Connection (Architecture) [IBM] ESC/P Epson Standard Code for Printers ESD Electronic Software Distribution ESDI Enhanced Small Device Interface ESI Enhanced Serial Interface (specification) [Hayes] ESN Electronic Security Number ESP Emulation Sensing Processor ESS Electronic Switching System ESU Electro-Static Unit

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ETANN Electrically Trainable Analog Neural Network (chip) [In ETB End of Transmission Block ETC Enhanced Throughput Cellular (modem protocol) [AT&T] ETPL Endorsed Tempest Products List ETS Econometric Time Series ETX End of Text EU Execution Unit EVE Extensible VAX Editor EVGA Extended Video Graphics Array EWAN Emulator Without A Good Name [Internet] EWS Employee Written Software [IBM] ExCA Exchangeable Card Architecture [Intel] EXE2BIN Program used to convert an (.EXE) file to binary format EXP Exponent EXT External EXTRN External Reference E-MAIL Electronic Mail F FAB Computer-Chip Fabrication Plant FAC File Access Code FAMOS Floating Gate Avalanche MOS FAP File Access Protocol FAPI Family Application Program Interface FAQ Frequently Asked Question FARNET Federation of American Research Networks [Internet] FAT File Allocation Table FAX Facsimile FCB File Control Block FCC Federal Communications Commission FCCSET Federal Coordinating Council for Science, Engineering a FCI Flux Changes per Inch FCS Frame Check Sequence FD Floppy Disk FDC Floppy Disk Controller FDDI Fiber Digital Device Interface FDISK Fixed Disk FDM Frequency-Division Multiplexing FDX Full Duplex FEFO First-Ended, First-Out FEP Front End Processor FESDK Far East Software Development Kit [Microsoft] FET Field Effect Transistor FF Flip-Flop FFST First Failure Support Technology [IBM] FFT Fast Fourier Transform FIF Fractal Image Format FIFO First-In, First-Out FILO First-In, Last-Out FIP File Processor Buffering FIPS Federal Information Processing Standard FIR Finite Impulse Response FLC Ferro-electric Liquid Crystal FLD Field FLDB Fileset Location Database [HP] FLL FoxPro Link Library [Microsoft Fox Pro]

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FLOPS Floating Point Operations Per Second FMS Forms Management System FMT Format FNT Font FOCUS Forum of Control Data Users FOG First Osborne Group FOIRL Fiber Optic Inter Repeater Link [IEEE] FORTH (Programming Language)(See HLL) FORTRAN Formula Translator (Programming Language)(See HLL) FOSE Federal Office Systems Exposition FOSSIL Fido/Opus/Seadog Standard Interface Layer FPGA Field Programmable Gate-Array FPLA Field Programmable Logic-Array FPP Fixed Path Protocol FPS Favorite Picture Selection FPU Floating Point Unit FQDN Fully Qualified Domain Name [Internet] FRAG Fragment FRAM Ferroelectric Random-Access Memory FRED Frame Editor FRPI Flux Reversals Per Inch FS File Separator FSD File System Driver [OS/2] FSE Full Screen Editor FSF Free Software Foundation [Internet] FSK Frequency Shift Keying FSN Full Service Network FSR Free System Resources FTAM File Transfer, Access and Management FTM Flat Tension Mask [Zenith] FTP File Transfer Protocol [Internet] FTPD File Transfer Protocol Daemon FTS Federal Telecommunication System FUI File Update Information FUNC Function FVT Full Video Translation FYI For Your Information F/T Full Time G GA General Availability GAAP Generally Accepted Accounting Principles GAL Generic Array Logic GAPI Gateway Application Programming Interface Gb Gigabit (1,000 megabits) GB Gigabyte (1,000 megabytes) GCR Group Code Recording GDA Global Data Area GDDM Graphics Data Display Manager GDI Graphics Device Interface GDP Graphic Draw Primitive GDS Global Directory Service [HP] GDT Geometric Dimensioning and Tolerancing GECOS General Electric Comprehensive Operating System GEIS General Electric Information Service (company) GEM Graphics Environment Manager (DRI Program)

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GENIE General Electric Network for Information Exchange GEOS Graphic Environment Operating System [Geoworks] GET Get Execute Trigger GHZ Gigahertz GIGO Garbage In, Garbage Out GIS Geographic Information System GIX Global Internet Exchange [Internet] GKS Graphical Kernal System GLIS Global Land Information System [US Geological Survey] GLM General Linear Models GLOBE Global Learning by Observations to Benefit the Environm GMS Global Messaging Service [Novell] GMT Greenwich Mean Time GND System Ground GNN Global Network Navigator [Internet] GNU Gnu's Not Unix (operating system) GOSIP Government Open Systems Interconnection Profile GOV Government (organization Domain name) [Internet] GP Gas Plasma GPF General Protection Fault GPI Graphics Programming Interface GPIB General Purpose Interface Bus GPS Global Positioning System GPSS General Purpose Systems Simulator (language) GRE Graphics Engine GREP Global Regular Expression Print GS Group Separator GSM Global System for Mobiles GUI Graphical User Interface GW-BASI Gee Whiz BASIC G/L General Ledger H HACMP High Availability Cluster Multi-Processing [IBM] HAL Hard Array Logic HAL Heuristically Programmed Algorithmic (computer) [from 1 HASP Houston Automatic Spooling Priority (System) HBA Host Bus Adapter HD Hard Disk HDA Head Disk Assembly HDCD High Definition Compatible Digital HDF Hierarchical Data Format [NCSA] HDI Head to Disk Interference HDLC High-Level Data Link Control HDR Header HDSC High Density Signal Carrier [DEC] HDSL High-rate Digital Subscriber Link HDTV High Definition Television HDW Hardware HDX Half Duplex HERC Hercules HEX Hexadecimal HFS Hierarchical File System [Macintosh] HGA Hercules Graphics Adapter HGCP Hercules Graphics Card Plus HH Hour

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HIFD High-Density Floppy Disk HIL Human Interface Link [HP] HLCO High Low Close Open HLL High Level Language HLLAPI High Level Language Application Programming Interface HLQ High Level Qualifier HLS Hue, Luminance, Saturation (color model) HLT Halt HMA High Memory Area [Microsoft] HMD Head Mounted Display HMI Host Micro Interface [CompuServe] HMOS High Density Metal Oxide Semiconductor HOTT Hot Off The Tree (electronic newsletter) HP Hewlett-Packard (Company) HPCC High Performance Computing and Communications HPDJ Hewlett-Packard Desk Jet HPFS High-Performance File System HPG Hewlett-Packard Graphics HPGL Hewlett-Packard Graphics Language HPIB Hewlett-Packard Interface Bus HPLJ Hewlett-Packard Laser Jet HPPA Hewlett-Packard Precision Architecture HPPI High Performance Parallel Interface HPUX Hewlett-Packard Unix HPW High Performance Workstation [Sun] HRG High Resolution Graphics HRIS Human Resource Information System HRMS Human Resource Management System HS High Speed HSC High Speed Channel HSI Hue Saturation Intensity HSM Hierarchical Storage Management HSP High Speed Printer HSSI High Speed Serial Interface HST High Speed Technology [U.S. Robotics] HSV Hue Saturation Value HTML HyperText Markup Language HTTP HyperText Transport Protocol HTTPD Hypertext Transfer Protocol Deamon [UNIX] HUT Hopkins Ultraviolet Telescope HVP Horizontal & Vertical Position HWCP Hardware Code Page HWD Height-Width-Depth HYTELNE Hypertext-browser for Telnet Accessible Sites Hz Hertz H/V Horizontal/Vertical H/W Hardware I IAB Internet Architecture Board [Internet] IAC Interapplication Communication IAL International Algebraic Language (ALGOL was first calle IANA Internet Assigned Numbers Authority [Internet] IAP Internet Access Provider [Internet] IAT Import Address Table IAUP Internet User Account Provider [Internet]

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IBC Instrument Bus Computer IBM International Business Machines (Corporation) IBM-GL IBM Graphics Language IC Input Circuit ICA Intra-application Communications Area ICAS Intel Communicating Applications Specifications ICCP Institute for the Certification of Computer Professiona ICE In-Circuit Emulator [Intel] ICI Image Component Information ICL Interface Clear ICLID Incomming-Call Line Identification ICM Image Color Matching [Kodak] ICMP Internet Control Message Protocol [Novell] iCOMP Intel Comparative Microprocessor (index) [Intel] ICP Integrated Channel Processor ICR Intelligent Character Recognition ICS Intuitive Command Structure ID Identification IDA Integrated Digital Access IDAPI Integrated Database Application Programming Interface IDE Imbedded Drive Electronics IDF Intermediate Distribution Frame IDIV Integer Divide IDL Interface Definition Language IDMS Integrated Data Base Management System IDP Integrated Data Processing IDT Interrupt Descriptor Table IEEE Institute of Electrical and Electronics Engineers IEF Information Engineering Facility IEMSI Interactive Electronic Mail Standard Identification IETF Internet Engineering Task Force [Internet] IEU Instruction Execution Unit IFD Image File Directory IFF Interchangeable File Format [Amiga] IFG Incoming Fax Gateway IFS Installable File System IFSM Information Systems Management IGA Integrated Graphics Array IGC Integrated Graphics Controller IGES Initial Graphics Exchange Standard IGS Internet Go Server [Internet] IIF Immediate IF IIR Immediate Impulse Response IITF Information Infrastructure Task Force IMAP Internet Message Access Protocol [Internet] IMAX Maximum Image IMDS Image Data Stream (format) [IBM] IME Input Method Editor IMG Image IMP Information/Interface Message Processor IMPA Intelligent Multi-Port Adapter [DCA] IMR Internet Monthly Report [Internet] IMS Information Management System IMTV Interactive Multimedia Television IMUL Integer Multiply IN Input INC Increment

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INIT Initialization INM Integrated Network Management INS Input String INT Integer INTA Interrupt Acknowledge InterNI Internet Network Information Center [Internet] INTO Interrupt if Overflow occurs IOCS Input/Output Control System IOCTL Input/Output Control IOPL Input/Output Priviledge Level IOSGA Input/Output Support Gate Array IP Instruction Pointer IPC Instructions Per Clock IPDS IBM Personal Dictation System [IBM] IPF Information Presentation Facility IPL Initial Program Load/Loader IPL Information Programming Language IPM Interpersonal Message IPSE Integrated Project Support Environment IPX Internetwork Packet Exchange [Novell] IQL Interactive Query Language IR Infrared IRC Internet Relay Chat [Internet] IRD Integrated Receiver/Descrambler IRDS Information Resource Dictionary System IRET Interrupt Return IRF Inheritance Rights Filter [Novell] IRL Interactive Reader Language IRLED Infrared Light Emitting Diode IRM Information Resource Management IRP I/O Request Packet IRQ Interrupt Request IRTF Internet Research Task Force [Internet] IRX Information Retrieval Experiment IS Information System ISA Industry Standard Architecture ISAM Indexed Sequential-Access Management/Method ISBN International Standard Book Number ISC Instruction Set Computer ISD Image Section Descriptor ISDN Integrated Services Digital Network ISH Information Super Highway ISI Internally Specified Index ISIS Integrated Systems and Information Services ISL Interactive System Language ISMF Interactive Storage Management Facility ISO/OSI International Standards Organization/Open Systems Inter ISP Internet Service Provider [Internet] ISPF Interactive System Programming Facility ISR Information Storage and Retrieval ISSN International Standard Serial Number ISV Independent Software Vendor ITB Information Technology Branch ITC International Typeface Corporation ITN Identification Tasking and Networking ITU International Telecommunication Union ITUG International Telecommunications User Group

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ITV Interactive Television ITX Intermediate Text Block IU Integer Unit IUAP Internet User Account Provider [Internet] IUS/ITB Interchange Unit Separator/Intermediate Transmission Bl IVIS Interactive Video Information System IVL Intel Verification Lab IVR Interactive Voice Response IVS Interactive Videodisk System IVT Interrupt Vector Table IV&V Independent Verification & Validation I-WAY Information Highway I/F Interface I/O Input/Output J JA Jump Address JAD Joint Application Design JAE Jump if Above or Equal JANET Joint Academic Network JBE Jump if Below or Equal JC Jump if Carry set JCL Job Control Language JE Jump if Equal JEDEC Joint Electronic Devices Engineering Council JEIDA Japanese Electronics Industry Development Association JES Job Entry System JFET Junction Field Effect Transistor JFIF JPEG File Interchange Format JG Jump if Greater JGE Jump if Greater or Equal JL Jump if Less JLE Jump if Less than or Equal to JMP Jump JNA Jump if Not Above JNAE Jump if Not Above or Equal JNB Jump if Not Below JNBE Jump if Not Below or Equal JNG Jump if Not Greater JNGE Jump if Not Greater or Equal JNLE Jump if Not Less or Equal JNO Jump if No Overflow JNP Jump if No Parity JNS Jump if No Sign JNZ Jump if Not Zero JPE Jump if Parity Even JPEG Joint Photographic Experts Group JPL Jet Propulsion Laboratory JPO Jump if Parity Odd JS Jump if Sign JUGHEAD Jonzy's Universal Gopher Hierarchy Excavation and Displ JZ Jump if Zero K Kb Kilobit KB Keyboard

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KBD Keyboard (also KEYB) KBD$ Keyboard [OS/2] KBPS Kilobytes Per Second KDT Key Definition Table KEYBBE Foreign language KEYBoard program - Belgium KEYBBR Foreign language KEYBoard program - Brazil KEYBCF Foreign language KEYBoard program - Canadian-French KEYBCZ Foreign language KEYBoard program - Czechoslovakia (Cze KEYBDF Foreign language KEYBoard program - Denmark KEYBFR Foreign language KEYBoard program - France KEYBGR Foreign language KEYBoard program - Germany KEYBHU Foreign language KEYBoard program - Hungary KEYBIT Foreign language KEYBoard program - Italy KEYBLA Foreign language KEYBoard program - Latin America KEYBNL Foreign language KEYBoard program - Netherlands KEYBNO Foreign language KEYBoard program - Norway KEYBPL Foreign language KEYBoard program - Poland KEYBPO Foreign language KEYBoard program - Portugal KEYBSF Foreign language KEYBoard program - Swiss-French KEYBSG Foreign language KEYBoard program - Swiss-German KEYBSL Foreign language KEYBoard program - Czechoslovakia (Slo KEYBSP Foreign language KEYBoard program - Spain KEYBSU Foreign language KEYBoard program - Finland KEYBSV Foreign language KEYBoard program - Sweden KEYBUK Foreign language KEYBoard program - United Kingdom KEYBUS Foreign language KEYBoard program - United States KEYBYU Foreign language KEYBoard program - Yugoslavia kHz Kilohertz KIS Knowbot Information Service [Internet] KPI Kernal Programming Interface KRS Knowledge Retrieval System KSH Korn Shell [UNIX] KSPH Keystrokes Per Hour KSR Keyboard Send Receive K-12 Kindergarten through 12th Grade [US Education System] L LADDR Layered Device Driver Architecture [Microsoft] LALL Longest Allowed Lobe Length LAN Local Area Network LANACS Local Area Network Asynchronous Connection Server LAPB Link Access Procedure Balanced (protocol) LAPD Link Access Procedure Direct (protocol) LAPM Link Access Procedure for Modems LAR Load Access Rights LASTpor Local Area Storage Transport (protocol) [DEC] LAT Local Access Terminal LAVC Local Area VAX Cluster LAWN Local Area Wireless Network LB Left Button (of 2 or 3 button Mouse) LBA Logical Block Addressing LBL Label LBR Librarian LBT Listen Before Talk LCC Leadless Chip Carrier LCD Liquid Crystal Display

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LCF Low Cost Fiber LCK Library Construction Kit [Mircrosoft FoxPro] LCP Link Control Protocol (protocol) LCU Last Cluster Used LDA Logical Device Address LDAP Lightweight Directory Access Protocol LDC Lotus Development Corporation LDM Long Distance Modem LDT Local Descriptor Table LE Less or Equal LEA Load Effective Address LEAF Law Enforcement Access Field LEC Local Exchange Carrier LED Light Emitting Diode LEL Link, Embed and Launch-to-edit [Lotus] LEM Language Extension Module LEN Low Entry Networking LEX Lexicon LF Line Feed LFI Last File Indicator LFS Local File System [HP] LFU Least Frequently Used LGDT Load Global Descriptor Table LICS Lotus International Character Set [LDC] LIDT Load Interrupt Descriptor Table LIEP Large Internet Exchange Packet [Novell] LIF Low Insertion Force LIFO Last In, First Out LILO Last In, Last Out LIM Lotus/Intel/Microsoft LIMA Lotus/Intel/Microsoft/AST LIMS Library Information Management System LIP Large Internet Packet LIPS Logical Inferences Per Second LISP List Processing (Language)(See HLL) LISTSER List Server [Internet] LLC Logical Link Control LLDT Load Local Descriptor Table LLF Low Level Format LMBCS Lotus Multibyte Character Set [Lotus] LMI Local Management Interface LMSW Load Machine Status Word LM/X LAN Manager for Unix LN Logarithm (Natural) LNDI Lotus Notes:Document Imaging LOC Loop On-Line Control LOCIS Library of Congress Information System LODSB Load String Byte LOG Logarithm (Base 10) LOGO (Programming Language)(See HLL) LOOPE Loop while Equal LOOPNE Loop while Not Equal LOOPNZ Loop while Not Zero LOOPZ Loop while Zero LORE Line Oriented Editor LPC Local Procedure Call LPD Line Printer Daemon (protocol) [Berkley]

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LPI Lines Per Inch LPL Lotus Programming Language [Lotus 1-2-3] [LDC] LPM Lines Per Minute LPN Logical Page Number LPS Low-Power Schottky LPT Line Printer LPT1 First Parallel Printer Port LPT2 Second Parallel Printer Port LPT3 Third Parallel Printer Port LQ Letter Quality LQM Link Quality Monitoring (protocol) LRC Local Register Cache LRL Least Recently Loaded LRM Language Reference Manual LRU Least Recently Used LSA Line Sharing Adapter LSAPI License Services Application Program Interface LSB Least Significant Bit LSC Least Significant Character LSD Least Significant Digit LSI Large Scale Integration LSL Link Support Layer LST List LTR Left-To-Right LU Logical Unit (Also LUN) LUA Logical Unit Application (interface) LUI Local User Input LUT Lookup Table LZ Lazy Write LZW Lempel-Ziv-Walsh (algorithm) M mA Milliampere Mac Macintosh (Apple Macintosh Computer) MAC Media/Medium Access Control MACH Multilayer Actuator Head [Epson] mAh Milliampere-Hour MAN Manual MANPAGE Manual Page [Unix] MAP Maintenance Analysis Procedures MAPI Mail/Messaging Applications Programming Interface [Micr MAPICS Manufacturing, Accounting and Production Information Co MARVEL Machine-Assisted Realization of the Virtual Electronic MASM Macro Assembler [Microsoft] MASS Maximum Availability and Support Subsystem [Parallan] MAU Media Access Unit MAVDM Multiple Application VDM MAX Maximum MB Megabyte (1,000 kilobytes) MBASIC Microsoft BASIC [Microsoft] MBONE Multicast Backbone [Internet] MBPS Megabytes Per Second MBR Master Boot Record MBX Mailbox MCA Micro Channel Architecture [IBM] MCAD Mechanical Computer Aided Design

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MCB Memory Control Block MCGA Multicolor Graphics Array MCI Media Control Interface [Microsoft] MCI MAIL (name from original company Microwave Communicatio MCL Microsoft Compatibility Labs [Microsoft] MCM Multi-Chip Module MCU Multi-Chip Unit [DEC] MD Make Directory MDA Monochrome Display Adapter MDI Multiple Document Interface MDIC Manchester Decoder and Interface Chip [AT&T] MDK Multimedia Developers Kit [Microsoft] MDLP Modile Data Link Protocol MDR Minimum Design Requirement MDY Month Day Year MEB Memory Expansion Board MEG Megabyte MEM Memory MESI Modified Exclusive Shared and Invalid (protocol) MFC Microsoft Foundataion Class [Microsoft] MFFS Microsoft Flash File System [Microsoft] MFLOPS Million Floating Point Operations Per Second MFM Modified Frequency Modulation MFP Multifunction Peripheral MFS Macintosh File System [Macintosh] MFT Multiprogramming with a Fixed number of Tasks MGA Monochrome Graphics Adapter MGE Modular GIS Environment MGR Manager MHS Message Handling Service MHz Megahertz MIB Management Information Base MICRO One-millionth MICS Macro Interpretive Commands MIDI Musical Instrument Digital Interface MIDL Microsoft Interface Definition Language MIF Management Information Format MII Microsoft/IBM/Intel MIL Machine Interface Layer [Go Corporation] MIM Metal-Insulator-Metal (screen) MIMD Multiple Instruction Multiple Data Stream (processor) MIME Multipurpose Internet Mail Extension [Internet] MIN Minimum MINUET Minnesota Internet Users Essential Tool [Internet] MIPS Million Instructions Per Second MIS Management Information System MISC Miscellaneous MIX Member Information Exchange MKDIR Make Directory ML Machine Language MLAPI Multilingual Application Programming Interface MLC Multilevel Cell (program) [Internet] MLID Multi-Link Interface Driver MM Minutes MMA Microcomputer Managers Association MMC Matched Memory Cycle MMIS Materials Manager Information System

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MMPM Multi Media Presentation Manager MMU Memory Management Unit MNOS Metal Nitride Oxide Semiconductor MNP Microcom Networking Protocol [Microcom] MO Magneto-Optical (disk drive) MOD Modem MODEM Modulator Demodulator MOHLL Machine Oriented High Level Language MOM Microsoft Office Manager [Microsoft] MOP Maintenance Operations Protocol MOS Metal Oxide Semiconductor MOSFET Metal Oxide Semiconductor Field Effect Transistor MOV Metal Oxide Varistor MOV Move MOVS Move String MOVS Move String MP Multiple Processors MPC Multimedia Personal Computer MPCS Mission Planning and Control Station (Software) MPEG Moving Picture Experts Group MPI Multiprecision Integer MPP Massively Parallel Processing MPR Multipart Repeater MPS Multiprocessor Specification MPU Microprocessor Unit MR Magnetoresistive MRCF Microsoft Realtime Compression Format MRCI Microsoft Realtime Compression Interface MRI Magnetic Resonance Imaging MRO Multi-Region Operation MRP Materials Requirement Planning MRPL Main Ring Path Length MRS Media Recognition System MRT Mean Repair Time MS Memory System MSACM Microsoft Audio Compression Manager [Microsoft] MSAU Multi-Station Access Unit MSAV Microsoft Anti Virus [Microsoft] MSB Most Significant Bit MSCDEX Microsoft Compact Disc Extensions [Microsoft] MSD Mass Storage Device MSDR Multiplexed Streaming Data Request MSDS Microsoft Developer Support [Microsoft] MSG Message MSI Medium Scale Integration MSL Map Specification Library MSN MicroSoft Network MSO Multiple-Systems Operator MSW Machine Status Word MS-DOS Microsoft - Disk Operating System [Microsoft] MTA Message Transfer Agent MTBB Mean Time Between Breakdowns MTBF Mean Time Between Failures MTBJ Mean Time Between Jams MTF Microsoft Tape Format [Microsoft] MTS Message Transfer Service/System MTTF Mean Time To Failure

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MTTR Mean Time To Repair MUD Multi-User Domain [Internet] MUL Multiply MUMPS Massachusetts General Hospital Utility Multi-Programmin MUSE Multi-User Shared Environment MUX Multiplexer mV Millivolt MVB Multimedia Viewer Book MVC Multimedia Viewer Compiler MVDM Multiple Virtual DOS Machines MVGA Monochrome Video Graphics Array MVP Multimedia Video Processor MVS Multiple Virtual Storage MVT Multiprogramming with a Variable number of Tasks MX Mail Exchanger [Internet] N NAC Network Adapter Card NACD National Association of Computer Dealers NACS National Advisory Committee on Semiconductors NAE Not Above or Equal NAK Negative Acknowledgment NAM Number Assignment Module NANO One thousand-millionth NAP Network Access Point NAPLPS North American Presentation Level Protocol Syntax (grap NAS Network Application Support [DEC] NASA National Aeronautics and Space Administration NASDAQ National Association of Securities Dealers Automatic Qu NASI NetWare Asynchronous Services Interface [Novell] NAU Network Addressable Unit NBE Not Below or Equal NBI Nothing But Initials NBS National Bureau of Standards NC No Carry NCA Network Communications Adapter NCC Network Control Center NCGA National Computer Graphics Association NCIC National Crime Information Center NCMT Numerical Control for Machine Tools NCP NetWare Core Protocol NCR National Cash Register (Company) NCSA National Center for Supercomputing Applications NCSI Network Communications Services Interface [Novell] NDDK Network Device Development Kid [Microsoft] NDEF Not to be Defined NDIS Network Device/Driver Interface Specification NDP Numeric Data Processor NDR Network Data Representation [HP] NDRO Non-Destructive Read Out NDS NetWare Directory Service [Novell] NEC Nippon Electric Company NED NASA Extragalactic Database [NASA] NEG Negative NEMP Nuclear Electro Magnetic Pulse NES National Education Supercomputer

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NET Network (organization Domain name) [Internet] NetBEUI NetBIOS Extended User Interface [IBM] NetBIOS Network Basic Input/Output System [IBM] NEWS NetWare Early Warning System [Frye Computer] NEXT Near-End Crosstalk NFF No Fault Found NFS Network File System NG No Good NGE Not Greater or Equal NHC National Hurricane Center NIC Network Information Center [Internet] NICAD Nickel Cadmium NICOLAS Network Information Center OnLine Aid System [NASA] NID New Interactive Display [NEC] NII National Information Infrastructure NIMH Nickel-Metal Hydride NIPS Network I/Os Per Second NIR Network Information Retrieval NIS Network Information Service [Unix] NISO National Information Standards Organization NISP Networked Information Services Project NIST National Institute for Standards and Technology NITC National Information Technology Center NJE Network Job Entry (protocol) [IBM] NL New Line NLE Not Less or Equal NLM NetWare Loadable Module [Netware] NLQ Near Letter Quality NLSFUNC National Language Support Function NMI Non-Maskable Interrupt NMM NetWare Management Map [NetWare] NMOS Negative Channel Metal-Oxide Semiconductor NMS Network Management System [Novell] NN No News [Internet] NNI Network-Network Interface NNTP Network News Transfer Protocol [Internet] NOC Network Operations Center NOP No Operation NOR Not Or NOS Network Operating System NPA Network Printer Alliance NPI Network Printer Interface NPL Nonprocedural Language NPTN National Public Telecomputing Network NPU Natural Processing Unit NPX Numeric Processor Extension NREN National Research and Education Network NRZ Not Return to Zero NRZI Non Return to Zero Inverted NS Nanosecond NSA POLY National Security Agency Polygraph NSF National Science Foundation NSFNET National Science Foundation Network NSI NASA Science Internet NSP Network Service Provider NSSC NASA Standard Spacecraft Computer NSTC National Science and Technology Council

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NSTL National Software Testing Labs NT New Technology [Microsoft] NTAS NT Advamced Server [Microsoft] NTF No Trouble Found NTFS NT File System [Microsoft] NTIA National Telecommunications and Information Administrat NTIS National Technical Information Service NTP Network Time Protocol [HP] NTRAS NT Remote Access Services [Microsoft] NTSA NetWare Telephony Services Architecture [Novell] NTSC National Television Standards Committee NUI Network User Identification NUL Null NV No Overflow NVM Non-Volatile Memory NVP Nominal Velocity of Propagation NVRAM Non-Volatile Random Access Memory NVT Novell Virtual Terminal [Novell] N/I Non-Interlaced O OAB One-to-All Broadcast OAG Official Airline Guide OAI Open Applications Interface OAS One-to-All Scatter OBEX Object Exchange [Borland] OBJ Object OC Optical Carrier OCE Open Collaborative Environment [Apple] OCL Operation Control Language OCR Optical Character Recognition OCT Object Class Table [HP] ODA Office Document Architecture ODAPI Open Database Application Programming Interface [Borlun ODBC Open Data Base Connectivity [Microsoft] ODBMS Object-Oriented Database Management System (also see OO ODI Open Datalink Interface [Novell] ODS Open Data Services [Microsoft] ODSI Open Directory Service Interfaces [Microsoft] ODT Open Desktop OEM Original Equipment Manufacturer OF Overflow Flag OFMT Output Format for Numbers OFS Output Field Separator OH Off Hook OIDL Object Interface Definition Language OIS Office Information Systems OLAP On-Line Analytical Processing (software) OLE Object Linking and Embedding [Microsoft] OLI Optical Line Interface [AT&T] OLMC Output Logic Macrocell OLTP On-Line Transaction Processing OM Object Manager OME Open Messaging Environment (protocol0 OMF Object Module Format [Microsoft] OMG Object Management Group

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OMI Open Messaging Interface [Lotus] OMNS Open Network Management System OMR Optical Mark Recognition ONC Open Network Computing [Sun] OODB Object-Oriented Database OODMS Object-Oriented Database Management System (also see OD OOL Object-Oriented Language OOPL Object-Oriented Programming Language OOPS Object Oriented Programming and Systems OOS Object-Oriented Systems OOUI Object Oriented User Interface OP Operation OPAC Online Public Access Catlog [Internet] OPC Optical Photoconductor OPCODE Operational Code OPD Operand OPI Open Prepress Interface OPM Operations Per Minute OPS Operations OPT Open Protocol Technology OPUS Octal Program Updating System ORACLE On-Line Inquiry and Report Generator (UNIX DB program) ORG Organization (organization Domain name) [Internet] ORS Output Record Separator OS Operating System OSA Open System Architecture OSF Open Software Foundation OSI Open Systems Interconnection OSM Off-Screen Model OSP Optical Storage Processor OSPF Open Shortest Path First OSQL Object Structured Query Language OS/2 Operating System/2 [IBM] OS/E Operating System/Environment OT Object Technology OTF Open Token Foundation OTP One-Time Programmable OURS Open Users Recommended Solutions OUTS Output String OV Overflow OWL Object Windows Library [Borlund] P PABX Private Automatic Branch Exchange PAC Privilege Attribute Certificate [HP] PACS-L Public Access Computer Systems List [Internet] PAD Packet Assembler/Disassembler PADS Pen Application Development System [Slate Corporation] PAIH Public-Access Internet Host [Internet] PAIS Public-Access Internet Site [Internet] PAL Paradox Applications Language [Borlund] PALC Plasma-Addressed Liquid Crystal (display) PALS Principles of the Alphabet Literacy System PAP Passwork Authentication Protocol (protocol) PAR Parallel PARA Paragraph

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PARC Palo Alto Research Center [XEROX] PASCAL (Programming Language named for Blaise Pascal) PAX Portable Archive Exchange [Unix] PBE Prompt By Example PBX Private Branch Exchange PC Personal Computer PCB Printed Circuit Board PCD Photo Compact Disk PCI Peripheral Component Interconnect [Intel] PCL Printer Command Language [HP] PCM Personal Computer Manufacturer PCMCIA Personal Computer Memory Card International Association PCMIM Personal Computer Media Interface Module PCN Personal Computer Network PCNFS Personal Computer Network File System PCS Patchable Control Store PC-DOS Personal Computer - Disk Operating System [IBM] PC-I/O Program Controlled I/O PD Public Domain PDA Personal Digital Assistant PDD Physical Device Driver PDF Portable Document Format PDIAL Public Dialup Internet Access List [Internet] PDL Page Description Language PDM Process Data Management PDN Public Data Network PDP Programmable Data Processor PDS Packet Driver Specification PDSS Post Development and Software Support PDT Programmable Drive Table PDU Plug Distribution Unit PE Parity Even PEA Pocket Ethernet Adapter PEL Picture Element [IBM] PEM Privacy-Enhanced Mail [Internet] PEN SDK Pen Computing Software Development Kit PEP Packetized Ensemble Protocol [Telebit] PERL Practical Extraction and Report Language [Unix] PERT Program Evaluation and Review Technique PES Positioning Error Signal PET Print Enhancement Technology [Compaq] PFR Power-Fail Restart PGA Pin Grid Array PGDN Page Down PGM Program PGP Pretty Good Privacy (name of encryption program) PGUP Page Up PHIGS Programmers' Hierarchial Interactive Graphics Standards PI Program Interruption PIA Peripheral Interface Adapter PIC Personal Intelligent Communicator PICT Picture PID Process Identification Number PIF Picture Interchange Format File PILOT Programmed Inquiry Learning Or Teaching PilotAC Pilot Automatic Computing Engine PIM Personal Information Manager

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PIN Personal Identification Number PINE Pine Is Not Elm [Unix] PING Packet Internet Groper PIO Parallel Input/Output PIP Picture In Picture PIPO Parallel In, Parallel Out PIT Programmable Interval Timer PIXEL Picture Element PL Plus PLA Programmable Logic-Array PLATO Programmed Logic for Automatic Teaching Operations PLC Programmable Logic Controller PLCC Plastic Leadless Chip Carrier PLD Programmable Logic Device PLDS Pilot Land Data System [NASA] PLL Phase Locked Loop PLS Primary Link Station PLV Production Level Video PL/1 Programming Language One PL/M Programming Language for Micros PM Presentation Manager [IBM] PMMU Paged Memory Management Unit PMOS Positive Channel Metal Oxide Semiconductor PMS Policy Management System PN Processing Node PNP Plug And Play PO Parity Odd POC Point Of Contact POL Problem Oriented Language POP Point Of Presence [MCI] POPA Pop All Registers POPF Pop Flags POS Point Of Sale POSIX Portable Operating System Interface POST Power-On Self Test POSTNET Postal Numeric Encoding Technique POWER Performance Optimization with Enhanced RISC [IBM] PPDS Personal Printer Data Stream [IBM] PPM Pages Per Minute PPP Point-to-Point Protocol [Internet] PPS Packets Per Second PRACSA Public Remote Access Computer Standards Association PRAM Parallel Random-Access Machine PRAM Parameter Random Access Memory PReP Power PC Reference Platform [IBM/Motorola] PRF Pulse Repetition Frequency PRMD Private Mangement Domain [X.400] PRMD Private Management Domain PRN Printer PROC Procedure PROFS Professional Office System [IBM] PROG Program PROLOG Programming In Logic (Programming Language)(See HLL) PROM Programmable Read Only Memory PRTSC Print Screen PS Proportional Spacing PSAP Presentation Service Access Point [HP]

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PSC Print Server Command PSDN Packet-Switched Data Network PSDS Packet-Switched Data Service PSERVER Print Server [NetWare] PSF Permanent Swap File PSID PostScript Image Data PSN Packet Switching Network PSP Personal Software Products (group) [IBM] PSPDN Packet-Switched Public Data Network PSTN Public Switch Telephone Network PSW Program Status Word PS/2 Programming System 2 [IBM] PT Page Table PTD Parallel Transfer Disk Drive PTE Page Table Entry PUB Public (directory) [Internet] PUS Processor Upgrade Socket PUSHA Push All Registers PUSHF Push Flags PVC Permanent Virtual Circuit PVM Parallel Virtual Machine PW Password PWB Printed Wire Board PWD Print Working Directory [Unix] PWR Power PWSCS Programmable Worstation Communication Services [IBM] P-SRAM Pseudo-Static Random Access Memory P/T Part Time Q QA Quality Assurance QAM Quadrature Amplitude Modulation QBE Query By Example QBF Query by Form QC Quality Control QDOS Quick and Dirty Operating System QEMM Quarterdeck Expanded Memory Manager [Quarterdeck Corp.] QFA Quick File Access QFP Quad Flat Pack QIC Quality Information Using Cycle Time [Hewlett-Packard] QPSK Quadrature Phase Shift Keying R RA Return Authorization RACF Resource Access Control Facility RAD Rapid Application Development RAG Row Address Generator RAID Redundant Arrays of Independent Disks RALU Register Arithmetic Logic Unit RAM Random Access Memory RAMDAC Random Access Memory Digital-to-Analog Converter [Sierr RAMP Remote Access Maintenance Protocol [Internet] RAND Random RAP Rapid Application Prototyping RARP Reverse Address Resolution Protocol RAS Random Access Storage

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RASAPI Remote Access Service Application Programming Interface RB Right Button (of 2 or 3 button Mouse) RBBS Remote Bulletin Board System RCL Rotate Carry Left RCP Remote Copy [Internet] RCR Rotate Carry Right RCS Records Communications Switching System RD Receive Data RDA Remote Database Access RDB Receive Data Buffer RDBMS Relational Database Mangement System RDCLK Received Timing Clock RDN Relative Distinguished Name [HP] RDSR Receiver Data Service Request REG Register REGAL Rigid Epoxy Glass Acrylic Laminate RELSECT Relative Sector REM Remark REN Rename REP Repeat REPE Repeat while Equal REPNE Repeat while Not Equal REPNZ Repeat while Not Zero REPZ Repeat while Zero REQ Request RES Remote Execution Service RET Resolution Enhancement Technology [HP] REX Relocatable Executable REXEC Remote Execution REXX Restructured Extended Executor (language) [IBM] RF Radio Frequency RFC Request For Comments [Internet] RFI Radio Frequency Interference RFP Request for Proposal RFQ Request for Quotation RFS Remote File Sharing RFT Revisable Form Text RFU Reserved For Future Use RGB Red-Green-Blue (color model) RI Referential Integrity RIFF Resource Interschange File Format [Microsoft] RIM Remote Installation and Maintenance [Microsoft] RIME RelayNet International Message Exchange RIP Raster Image Processor RISC Reduced Instruction Set Computer RJE Remote Job Entry RLE Run Length Encoded RLL Run Length Limited RLN Remote LAN Node [DCA] RLOGIN Remote Login RLSD Received Line Signal Detected RLSI Ridiculously Large-Scale Integration RM Reset Mode RMA Return Material Authorization RMDIR Remove Directory RMON Remote Monitor/Monitoring RMP Remote Maintenance Processor [IBM]

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RMS Record Management Services RN Read News [Internet] RND Random RNG Random Number Generator ROL Rotate Left ROM Read Only Memory ROP Raster Operation ROR Rotate Right RPC Real Procedure Call RPG Report Program Generator (Programming Language) RPL Resident Programming Language RPPROM Reprogrammable PROM RPQ Request for Price Quotation RPRINTE Remote Printer [NetWare] RPT Repeat RQBE Relational Query By Example [Fox Pro] RR Real Reality RS Radio Shack RSA129 (129 digit cryptographic security number named after it RSCS Remote Spooling Communications System RSH Remote Shell RSL Request-and-Status Link RSP Required Space Character RST Reset RSTS Resource Sharing Time Sharing [Digital] RSX Real Time Resource Sharing Executive RT Real Time RTAM Remote Terminal Access Method RTC Real-Time Clock RTDM Real-Time Data Migration RTEL Reverse Telnet [Internet] RTF Rich Text Format RTL Register Transfer Language RTM Response Time Monitor RTOS Real-Time Operating System RTS Remote Takeover System RTTY Radio Teletypewriter (Communications) RTV Real Time Video RVA Relative Virtual Address RVI Reverse Interrupt RWM Read-Write Memory RX Receiver RXD Received Data R&D Research and Development R-O Read Only R/T Receive/Transmit R/W Read/Write S SA Simulated Annealing SAA Systems Application Architecture [IBM] SADL Synchronous Data Link Control [Racal-Vadic] SAINT Symbolic Automatic Integrator SAL Shift Arithmetic Left SAM Serial Access Memory SAP Second Audio Program

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SAP Symbolic Assembly Program SAR Shift Arithmetic Right SAS Sales Accounting System SAVDM Single Application VDM SB Sound Board SBA Scene Balance Algorithms [Kodak] SBB Subtract With Borrow SBC Single-Board Computer SBCS Single-Byte Character Set SCAS Scan String SCB Subsystem Control Block [IBM] SCC Serial Communications Controllers SCCS Source Code Control System SCD Standard Color Display SCF System Control Facility SCM Software Configuration Management SCO Santa Cruz Operation (Software Company) SCOPE Simple Communications Programming Enironment [Hayes] SCP Save Cursor Position SCR Silicon Controlled Rectifier SCRN Screen (video display) SCSA Signal Computing System Architecture [Dialogic] SCSI Small Computer Systems Interface SD Send Data SDA Software Disk Array SDB Symbolic Debugger [Unix] SDF Space Delimited File SDI Selective Dissemination of Information SDK Software Developer's Kit [Microsoft] SDLC Synchronous Data Link Control (protocol) SDN Software Defined Network [AT&T] SDNS Secure Data Network Service SDR Streaming Data Request SDRAM Synchronous Dynamic Random Access Memory SDS Sysops Distribution System SD_STB Streaming Data Strobe [IBM] SEA Standard Extended Attribute [OS/2] SEAC Name of first computer to use transistors, built by Sta SEAL Segmentation and Reassembly Layer (protocol) SEC Single Error Correction SECAM Sequentiel Couleur Avec Memoire (Sequential Color With SED Stream Editor SEG Segment SEL Select SEM Scanning Electron Microscope SER Serial SET Softwave Engineering Technology SETEXT Structure Enhanced Text [Internet] SEU Smallest Executable Unit SF Sign Flag SFQL Structured Full-text Query Language SFT System Fault Tolerance SFX Sound Effect(s) SGDT Store Global Descriptor Table SGEN Signal Generator SGML Standard Generalized Markup Language SGR Set Graphics Rendition

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SHAR Shell Archive SHG Segmented Hypergraphics SHL Shift Logical Left SHR Shift Logical Right SI Source Index SID Serial Input Data SIDF System Independent Data Format SIDT Store Interrupt Descriptor Table SIG Special Interest Group SIGCAT Special Interest Group on CD-ROM Applications and Techn SIGGRAP Special Interest Group on Graphics Applications SIM Simulator SIMD Single Instruction Multiple Data Stream (processor) SIMM Single In-line Memory Module SIMULA Simulation (language) SIO Serial Input/Output (communications driver) SIP Single In-line Package SIPO Serial In, Parallel Out SIPP Single In-line Pin Package SIR Serial Infrared [Hewlett-Packard] SIT Special Information Tones SI/SO Serial In/Serial Out SLDT Store Local Descriptor Table SLIP Serial Line Interface Protocol SLMR Silly Little Modem Reader SLOSH Sea, Lake and Overland Surge from Hurricane (program) SLSI Super Large-Scale Integration SLSS Systems Library Subscription Service [IBM] SM Set Mode SMB Server Message Block (protocol) [MII] SMD Surface Mounted Device SMDS Switched Multi-Megabit Data Service SMF System Manager Facility [Compaq] SMI System Management Interrupt [Intel] SMIF Standard Mechanical Interface SMIT System Management Interface Tool [IBM] SMK Software Migration Kit [Microsoft] SMM System Mangement Mode [Intel] SMP Simple Management Protocol SMPC Shared Memory Parallel Computer SMPS Switching Mode Power Supply SMRAM System Management Random Access Memory SMS Storage Management Services [NetWare] SMSW Store Machine Status Word SMT Surface-Mount Technology SMTP Simple Mail Transfer Protocol SMU System Management Utility SN Serial Number SNA Systems Network Architecture [IBM] SND Sound SNMP Simple Network Management Protocol [Internet] SNOBOL String Oriented Symbolic Language (Progamming Language) SNP Serial Number/Password [Omen Technology] SNR Signal-to-Noise Ratio SOC System On a Chip SOCKS Socket Secure (server) [Internet] SOE Standard Operating Environment

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SOH Start of Header SOL Simulation Oriented Language SOM Start of Message SONET Synchronous Optical Network SOP Standard Operating Procedures SOS Silicon On Sapphire SOTA State Of The Art SOX Sound Exchange SP Service Pack [IBM] SPA Software Publishers Association SPAN Space Physics Analysis Network SPARC Scalable Processor Architecture SPC Small Peripheral Controller SPCL Spectrum Cellular Corporation SPEC Systems Performance Evaluation Cooperative SPF Shortest Path First SPI Service Provider Interface SPIKE Science Planning Intelligent Knowledge-Based Environmen SPL Spooler SPM System Performance Monitor [IBM] SPOOL Simultaneous Peripheral Operations On Line SPP Sequenced Packet Protocol SPS Standby Power System SPSS Statistical Package for the Social Sciences SPT Sectors Per Track SPX Sequenced Packet Exchange [Novell] SQ Squeezed (files) SQL/DS Structured Query Language/Data System [IBM] SQRT Square Root SR Shift Register SRAM Shadow Random Access Memory SRB Source-Route Bridge SRD Screen Reader System SRM Security Reference Monitor SRO Sharable and Read Only SRPI Server-Requester Programming Interface SRQ Service Request SRR Serially Reusable Resource SRT Structure Rule Table [HP] SS Stack Segment SSAP Source Service Access Point SSEC Selective Sequence Electronic Calculator [IBM] SSGA System Suppport Gate Array SSI Small Scale Integration SST Spread-Spectrum Technology STA Spanning Tree Algorithm STB Strobe STC Set Carry Flag STD Set Direction Flag STDA StreetTalk Directory Assistance [Banyan] STDAUX Standard Auxillary STDERR Standard Error STDIN Standard Input STDIO.H Standard Input/Output Header [C] STDM Statistical Time Division Multiplexer STDOUT Standard Output STDPRN Standard Printer

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STI Set Interrupt Flag STN Super-Twist Nematic STOS Store String STP Shielded Twisted Pair (cable) STR Store Task Register STRESS Structural Engineering System Solver (Programming Langu STRUDL Structural Design Language (Programming Language) STScI Space Telescope Science Institute STT Secure Transaction Technology STX Start of Text SUB Subroutine SVC Switched Virtual Circuit SVGA Super Video Graphics Array SVM System Virtual Machine [Microsoft] SVR# System V Release Number [AT&T] SWAIS Simple Wide Area Information Server [Internet] SYLK Symbolic Link SYNC Synchronous SYS System SYSGEN System Generator SYSLOG System Log SYSMOD System Modification SYSOP System Operator SYSREQ System Request S-VHS Super VHS S/H Sample and Hold S/N Signal-to-Noise (Ratio) S/W Software T TAD Telephone Answering Device TAPCIS The Access Program for the CompuServe Information Servi TAPI Telephony Applications Programming Interface TAS Telephone Access Server TASM Turbo Assembler [Borland] TAXI Transparent Asynchronous Tranceiver/Receiver Interface TB Terabyte (1,000 gigabytes) TBBS The Bread Board System (BBS) TC Test Control TCL Tool Command Language TCM Trellis-Coded Modulation TCP/IP Transmission Control Protocol/Internet Protocol TD Transmit Data TDD Telecommunications Device for the Deaf TDE Terminal Display Editor TDF Time Differential Factor [HP] TDI Transport Driver Interface TDM Time Division Multiplexing TDMA Time Division Multiple Access TDMS Terminal Display Management System TDR Time Domain Reflectometry TDSR Transmitter Data Service Request TDtoDP Tablet Coordinates to Display Coordinates (converting) TEB Thread Environment Block TEC Tokyo Electronics Corporation TED Tiny Editor

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TEML Turbo Editor Macro Language [Borlund] TEMP Temporary TER Thermal Eclipse Reading [Sony] TERMPWR Terminator Power TE/2 Terminal Emulator/2 [Oberon] TFDD Text File Device Driver TFEL Thin-Film Electroluminescent TFT Thin-Film Transistor (screens) TFTP Trivial File Transfer Protocol THD Total Harmonic Distortion THOR Tandy High-Performance Optical Recording THR Transmit Holding Register TI Texas Instruments, Inc. TIA Telecommunications Industry Association TID Target ID TIES Time Independent Escape Sequence TIFF Tagged Image File Format TIGA Texas Instruments Graphics Architecture TIGER Topologically Integrated Geographic Encoding and Refere TIIAP Telecommunications and Information Infrastructure Assis TIP Terminal Interface Processor TIPS The Internet Protocol Suite (TCP,UDP,IP,FTP,SMTP,SNMP.. TLA Three-Letter Acronym TLB Translation Lookaside Buffer TLI Transport Layer Interface TLU Table Lookup TM Trademark TMP Temporary TN Twisted Nematic TNC Terminal Node Controller ToC Table Of Contents TOP Technical and Office Protocol TPC Transaction Processing Performance Council TPI Tracks Per Inch TPL Table Producing Language TPM Transactions Per Minute TPORT Twisted Pair Port Transceiver [AT&T] TPS Transactions Per Second TPW Turbo Pascal for Windows TQM Total Quality Management TR Terminal Ready TRADIC Transistorized Airborne Digital Computer (Name of first TRN Threaded Read News [Internet] TRON The Real-Time Operating System Nucleus TS Top Secret TSA Technical Support Alliance TSAPI Telephony Services Application Program Interface [AT&T TSB Termination Status Block TSO Time Sharing Option TSR Terminate and Stay Resident TSS Task State Segment TSTN Triple Supertwisted Nematic TSV Tab Separated Values TS/SI Top Secret/Sensitive Information TTL Transistor-Transistor Logic TTS Text-To-Speech TTY Teletype

( 41 )

TUI Text-Based User Interface [WordPerfect] TVF Table of contents Verbosely from File [UNIX] TVI Television Interference TWX Teletypewriter Exchange Service TXD Transmitted Data TXT Text TXT2STF Text To Structured File [Lotus Agenda] T/B Top and Bottom T/R Transmit/Receive U UA User Agent UAE Unrecoverable Application Error UART Universal Asynchronous Receiver/Transmitter UCL Universal Communications Language UCS Universal Character Set UDC User Defined Commands UDE Universal Data Exchange UDF User Defined Functions UDP User Datagram Protocol UFS Unix File System UG User Group UI Unix International UID User Identifier UL Underwriters Laboratories ULA Uncommitted Logic Array ULN Universal Link Negotiation ULSI Ultra Large Scale Integration UMB Upper Memory Block [LIM/AST] UNC Universal Naming Convention UNCOL Universal Computed Oriented Language UNI User-Network Interface UNICOM Universal Integrated Communication (System) UNICOS Universal Compiler FORTRAN compatible UNIVAC Universal Automatic Computer UNIX (AT&T Bell Laboratories Operating System) UNMA Unified Network Management Architecture UPC Universal Product Code UPL User Program Language UPM Unix Programmer's Manual UPS Uninterruptible Power Supply UREP Unix RSCS Emulation Protocol (protocol) URL Uniform Resource Locator URN Uniform Resource Number US Unit Separator USART Universal Synchronous-Asynchronous Reciever/Transmitter USENET User's Network [Internet] USERID User Identification USQ Unsqueezed (files) USR US Robotics (corporation) USRT Universal Synchronous Receiver/Transmitter USSA User Supported Software Association (United Kingdom) UT User Terminal UTC Coordinated Universal Time UTI Universal Text Interchange UTP Unshielded Twisted-Pair (cable)

( 42 )

UTS Update Time Stamp UU Uuencode/Uudecode UUCP Unix-To-Unix Copy Program UUD UUDecoding [Unix] UUE UUEncoding [Unix] UUI User-To-User Information [AT&T] UUID Universal Unique Identifier UV Ultraviolet V VA Virtual Address VAD Value Added Dealer VADD Value Added Disk Driver VAL Value VAM Virtual Access Method VAN Value Added Network VAP Value Added Process VAR Value Added Reseller VAX/VMS Virtual Address Extension/Virtual Memory System [DEC] VB Variable Block VBA Visual Basic for Applications [Microsoft] VBE/AI Vesa Bios Extension/Audio Interface VBR Variable Bit Rate VBRUN Visual Basic Runtime VCD Virtual Communications Driver VCPI Virtual Control Program Interface VCR Video Cassette Recorder VDD Virtual Device Driver VDDM Virtual Device Driver Manager VDE Video Display Editor VDISK Virtual Disk VDM Virtual DOS Machine [IBM] VDS Virtual DMA Services VDT Video Dial Tone VDU Video Display Unit VEGA Video-7 Enhanced Graphics Adapter [Video-7, Inc.] VEMM Virtual Expanded Memory Manager VER Verify VERONIC Very Easy Rodent-Oriented Network Index to Computer Arc VERR Verify Read Access VERW Verify Write Access VESA Video Electronics Standards Association VF Virtual Floppy VFAT Virtual File Allocation Table [Microsoft] VFD Vacuum Fluorescent Display VFS Virtual File System VGA Video Graphics Array VGC Video Graphics Controller VHDL VHSIC Hardware Description Language VHS Very High Speed VHSIC Very High Speed Integrated Circuit VI Visual Interactive (editor) [UNIX] VIE Virtual Information Environment VIF Virtual Interface VIM Vendor Independent Mail VINES Virtual Network Operating System [Banyan]

( 43 )

VIO Video Input/Output VIP Variable Information Processing VIPER Verifiable Integrated Processor for Enhanced Reliabilit VIS Video Information System [Tandy] VLF Very Low Frequency VLIW Very Long Instruction Word VLM Virtual Loadable Module VLSI Very Large Scale Integration VLSIPS Very Large Scale Immobilized Polymer Synthesis VLT Variable List Table VL-BUS Vesa Local-Bus [VESA] VM Virtual Machine VMA Virtual Memory Address VMB Virtual Machine Boot VME Virtual Memory Environment VMM Virtual Machine/Memory Manager VMOS Vertical MOS VMS Virtual Memory System VMS Virtual Memory System VMT Virtual Memory Technique VNA Virtual Network Architecture VOD Video On Demand VOL Volume VOM Volt Ohm Meter VOS Verbal Operating System VPD Virtual Printer Device VPDS Virtual Private Data Service [MCI] VR Virtual Reality VRAM Video Random Access Memory VRML Virtual Reality Markup Language VROOMM Virtual Real-time Object Oriented Memory Manager [Borlu VRU Voice Response Unit VS Virtual Storage VSAM Virtual Storage Access Method VSAT Very Small Aperture Terminal VSE Virtual Storage Extended VSF Vertical Scanning Frequency VSIO Virtual Serial Input Output VSLI Very Large Scale Integration VSM Virtual Shared Memory VSN Volume Serial Number VSOS Virtual Storage Operating System VSYNC Vertical Sync VTAM Virtual Telecommunications Access Method [IBM] VUE Visual User Environment [HP] VUI Video User Interface VUP VAX Unit of Performance VWB Visual WorkBench [Microsoft] VxD Virtual Extended Driver [Microsoft] W W3 (see WWW) W4 What-Works-With-What WABI Windows Application Binary Interface [Sun] WAIS Wide Area Information Server WAITS Wide Area Information Transfer System

( 44 )

WAN Wide Area Network WATS Wide Area Telecommunications Service WC Word Count WDL Windows Driver Library [Microsoft] WELL Whole Earth 'Lectronic Link (BBS) WFW Windows For Workgroups [Microsoft] WGS Work Group System WHAM Waveform Hold and Modify [Microsoft] WINE Windows Emulator WINForu Wireless Information Networks Forum WinHEC Windows Hardware Engineering Conference WINSOCK Windows Open Systems Architecture [Microsoft] WINWORD Word For Windows [Microsoft] WISE WordPerfect Information System Environment WM Work Manager [HP] WNIC Wide-Area Network Interface Co-Processor WNIM Wide-Area Network Interface Module WORM Write Once, Read Many WOS Workstation Operating System WOSA Windows Open Services/Systems Architecture [Microsoft] WOW Windows On Win32 [Microsoft] WP WordPerfect WPHD Write-Protect Hard Disk WPM Words Per Minute WPOS Workplace Operating System WPS Windows Printing System [Microsoft] WS WordStar WT Write Through WWIS World Wide Information System [Internet] WWW World-Wide Web [Internet] WYSBYGI What You See Before You Get It WYSIWYG What You See Is What You Get W/ With W/O Without X X2B Hexadecimal to Binary [REXX] X2C Hexadecimal to Character [REXX] X2D Hexadecimal to Decimal [REXX] XA Extended Architecture XAPIA X.400 Application Program Interface Association XBM X Windows Bitmap XCHG Exchange XCMD External Command XCOPY Extended Copy XDF Extended Density Format [IBM] XDR Extended/External Data Representation XDS X/Open Directory Service [HP] XFCN External Function XGA Extended Graphics Array [IBM] XID Exchange Identifier XIOS Extended Input/Output System XLAT Translate XLM Excel Macro Language [Microsoft] XMIT Transmit XMM Extended Memory Manager [LIM/AST]

( 45 )

XMS Extended Memory Specification [LIM/AST] XNS Xerox Network System (protocol) [Xerox] XOFF Transmitter Off XOM X/Open Object Management [HP] XON Transmitter On XOR Exclusive OR (Also EOR) XSMD Extended Storage Module Drive (interface) XTAL Crystal XTCLK External Transmit Clock Y YACC Yet Another Compiler Compiler YAM Yet Another Modem [Omen Technology] Z ZBR Zone Bit Recording ZDL Zero Delay Lockout ZDS Zenith Data Systems ZIF Zero-Insertion Force (socket) ZIP Zigzag In-Line Package ZSL Zero Slot LAN Z-CAV Zoned Constant Angular Velocity * Wildcard character (asterisk) *.* Star-Dot-Star (represents Any file name.Any file name e .ADB Appointment Book [HP] .ADE cc:Mail Local Address Book update .ADF Adapter Description File (file name extension) [IBM] .ADN Add In Utility (file name extension) [Lotus 1-2-3] [LDC .AFM Adobe Font Metrics (file name extension) [Adobe Systems .ANN Annotations (file name extension) [IBM] .APP Application (file name extension) [R:Base] .APR Lotus Approach Database .APT Lotus Approach Database File .ARC Archive (file name extension) .ARJ Compressed File (file name extension) [Jung] .ASC ASCII text (file name extension) .ASM Assembler Source Language (file name extension) .ATT cc:Mail message attachment .AU Sound File .BAK Backup (file name extension) .BAS Basic Language (file name extension) .BAT Batch Processing (file name extension) .BGI Borland Graphic Interface (file name extension) .BIB Bibliography (file name extension) .BIN Binary (file name extension) .BK! Backup (file name extension) [WordPerfect] .BLD BASIC Bload Graphics (file name extension) .BMP Bitmap Picture (file name extension) .BSC Boyan Script (file name extension) [Boyan Communication .C C source code (file name extension) [C] .CAP Capture (file name extension) .CAT Catalog (file name extension)

( 46 )

.CBL COBOL source code (file name extension)

.CCM cc:Mail inbox

.CDF Comma Delimited Format (file name extension)

.CDX Compound Index (file name extension) [Fox Pro]

.CFG Configuration (file name extension)

.CFL Cash Flow Lists [HP]

.CGM Computer Graphics Metafile (file name extension)

.CHK CHKDSK (file name extension)

.CLP Clipboard (file name extension) [Windows]

.CMD Command (file name extension)

.CNF Configuration (file name extension)

.CNT Help Contents File [Microsoft]

.COB COBAL source code (file name extension)

.COD Code List (file name extension)

.COM Command (file name extension)

.CPI Code Page Information (file name extension) [MS-DOS]

.CRD Cardfile (file name extension)

.CTF Character translation files [HP]

.CUR Cursor (file name extension)

.DAT Data (file name extension)

.DBF Database (file name extension)

.DCF Datacomm Configuration File [HP]

.DCT Dictionary (file name extension)

.DEF Definitions

.DEM Demonstration (file name extension)

.DES Description (file name extension)

.DHP Dr. Halo PIC (file name extension)

.DIC Dictionary (file name extension)

.DOC Document

.DOT Microsoft Word Template

.DRS Driver Resource (file name extension) [WordPerfect]

.DRV Device Driver (file name extension) (Also see .DVR)

.DRW Draw

.DTA Data (file name extension)

.DV DESQview Script (file name extension)

.DVI Device Independent (file name extension)

.DVR Device Driver (file name extension) (Also see .DRV)

.DXB Drawing Interchange Binary (file name extension) [AutoC

.EML Electronic Mail (file name extension)

.ENC Encoded (file name extension)

.ENV Environment files

.EPS Encapsulated PostScript (file name extension)

.EQN Solver equation lists [HP]

.EXE Executable (file name extension)

.EXM System Manager compliant Programs [HP]

.FAX Fax (file name extension)

.FCF Filer configuration files [HP]

.FLD cc:Mail folder

.FON Font Format files [DOS]

.FOR FORTRAN source code (file name extension)

.FRS WordPerfect Graphics Driver (file name extension)

.GDB General Data Base [HP]

.GIF Graphics Interchange Format (file name extension)

.GLY Glossary (file name extension) [Microsoft Word]

.GRF Graph (file name extension)

.GRP Group (file name extension)

.gz Compressed file (compressed filename extension - using

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.H Header (file name extension) [C]

.HLP Help (file name extension)

.HPJ Help Project File [Microsoft]

.HST History

.HT Hyper Terminal File [Microsoft]

.HTM Hypertext Markup File (HTML)

.HYP Hyphenation (file name extension)

.ICO Icon (file name extension)

.IDF MIDI Instrument Definition

.IDX Index (file name extension)

.INF Information (file name extension)

.INI Initialize (file name extension)

.JNK Junk (file name extension)

.KIT Keyboard information table [DOS]

.LBR Library (file name extension)

.LCF Datacomm Script files [HP]

.LET Letter (file name extension)

.LIB Library (file name extension)

.LOG Log File

.LRS Language Resource (file name extension) [WordPerfect]

.LST List (file name extension)

.MAC MacPaint (file name extension)

.MAI Mail (file name extension)

.MAP Linker Map (file name extension)

.MAS Freelance Presentation SmartMaster File [Lotus]

.MDF Menu Definition File (file name extension)

.ME Opening Information (file name extension) (As in READ.M

.MEN Menu (file name extension)

.MET Metafile (file name extension)

.MID MIDI Sequence

.MNU Menu (fine name extension)

.MSG Program Message (file name extension)

.MSP Microsoft Paint (file name extension) [Microsoft]

.MWP WordPro Wordprocessor File [Lotus]

.NCF Netware Command File [Novell]

.NDB Note Taker Data Base [HP]

.NDX Index (file name extension)

.NEW New Information (file name extension)

.OLD Old version (file name extension)

.OPT Options (file name extension)

.ORI Original (file name extension)

.OUT Outlines (file name extension)

.OVL Program Overlay (file name extension)

.OVR Program Overlay (file name extension)

.PAK Packed (compressed file name extension) [NoGate Consult

.PAS PASCAL source code (file name extension)

.PAT Patch (file name extension)

.PCF Printer Configuration File [HP]

.PCT Picture (file name extension)

.PCX Picture Image (file name extension)

.PDB Phone Book [HP]

.PDF Printer Description (file name extension)[Borlund,Lotus

.PDT Pocket Quicken Data file

.PDX Paradox files (file name extension) [Borlund]

.PFM Printer Font Metrics (file name extension) [Windows]

.PGL Graphics (file name extension) [Hewlett-Packard]

.PGP ProGram Parameter (file name extension) [AutoCAD]

( 48 )

.PHO Phone List (file name extension)

.PLL Prelinked Library (file name extension) [Clipper]

.PRD Printer Driver (file name extension) [Word]

.PRE Freelance Presentation File [Lotus]

.PRF Preferences (file name extension) [Grammatik IV]

.PRG Program (file name extension)

.PRO Profile (file name extension)

.PRS Printer (file name extension) [WordPerfect]

.PS PostScript (file name extension)

.ps.Z Compressed PostScript (file name extension) [Unix]

.PUB Publication (file name extension) [Ventura]

.PX Primary Index (file name extension) [Paradox]

.QDI Dictionary (file name extension) [Quicken]

.QDT Data (file name extension) [Quicken]

.QIC Backup Set for Microsoft Backup

.QIF Quicken Interchange Format (file name extension)

.QMT Memorized List (file name extension) [Quicken]

.QNX Indexes to Data (file name extension) [Quicken]

.REC Recorder (file name extension)

.REF Reference (file name extension)

.RES Resource (file name extension)

.SAM AmiPro Wordprocessor File [Lotus]

.SAV Saved (file name extension)

.SC Script (file name extension)

.SCR Script (file name extension)

.SDF Standard Data Format (file name extension)

.SEA Self Extracting Archive (file name extension) [Macintos

.SET Driver Set (file name extension) [Lotus 1-2-3] [LDC]

.SIT Stuff-It (compressed file name extension) [Macintosh]

.SMP Sample (file name extension)

.SND Sound File

.SPL Spell Checker (file name extension)

.SRC Source (file name extension)

.STA Calculator Statistics List [HP]

.STF Structured File (file name extension) [Lotus Agenda]

.STY Style (file name extension) [Ventura, Word, WordPerfect

.SUP Supplemental Dictionary (file name extension) [WordPerf

.SWP Swap (file name extension)

.SYM Symbols (file name extension)

.SYN Synonym (file name extension)

.SYS System Configuration (file name extension)

.tar Tape Archive (archived file name extension) [Unix]

.tar.Z Compressed Archived files (file name extension) [Unix]

.TBK Toolbook (file name extension)

.TDF Trace Definition File (file name extension) [OS/2]

.TFM Tagged Font Metric (file name extension)

.THD Thread (file name extension)

.THS Thesaurus (file name extension)

.TIF Tagged Image File (filename extension)

.TLX Telex (file name extension)

.TRM Terminal (file name extension)

.TST Test (file name extension)

.TTF TrueType Font (file name extension)

.TUT Tutorial (file name extension)

.UC2 Compressed File (file name extension) [UltraCompressor]

.VAL Validity Checks (file name extension) [Paradox]

.VBX Visual Basic Extension (file name extension)

( 49 )

.VRS WordPerfect Graphics Driver (file name extension)

.WAV Waveform Audio (file name extension)

.WDB World Time Data Base [HP]

.WK1 Worksheet (file name extension) [Lotus 1-2-3] [LDC]

.WK3 Worksheet File [Lotus]

.WK4 Worksheet File [Lotus]

.WKB Workbook (file name extension) [WordPerfect]

.WKE Worksheet (file name extension) [Lotus 1-2-3] [LDC]

.WKQ Spreadsheet (file name extension) [BORQU]

.WKS Worksheet (file name extension) [Lotus 1-2-3] [LDC]

.WKZ Compressed Spreadsheet (file name extension) [BORQU]

.WMF Windows Metafile Format (file name extension) [Microsof

.WPG Graphics (file name extension) [WordPerfect]

.WPK Keyboard (file name extension) [WordPerfect]

.WPM Macro (file name extension) [WordPerfect]

.WQ1 Spreadsheet (file name extension) [BORPQU]

.WQ! Compressed Spreadsheet (file name extension) [BORPQU]

.WR1 Worksheet File [Lotus]

.WRI Write (file name extension)

.WRK Worksheet File [Lotus]

.z Packed file (file name extension - using Pack/Unpack pr

.Z Compressed file (file name extension - using Compress/U

.ZIP Compressed File (file name extension) [PKWare]

.ZOO Compressed File (file name extension) [Dhesi]