COURSE TITLE : DIGITAL INSTRUMENTS PRINCIPLECOURSE CODE : 3075COURSE CATEGORY : BPERIODS/WEEK : 4PERIODS/SEMESTER : 72CREDITS : 4

TIME SCHEDULE

MODULE TOPICS PERIODS1 Number system & Boolean algebra 17

Test I 12 Logic families &Combinational logic

circuits17

Test II 13 Sequential logic circuits 17

Test III 14 ADC , DAC & MEMORIES 17

Test IV 1Total 72

OBJECTIVES

MODULE – I1.1. Understand number systems1.1.1Explain the conversion from decimal to binary by actual division and tabulation with

suitable example.1.1.2 Study decimal and binary fractions and conversion of decimal fraction into binary

with suitable examples.1.1.3 Know the features of octal number system with suitable examples for conversion of

decimal into octal and octal into binary.1.1.4 Study octal fractions and conversion of decimal fraction into octal.1.1.5 Know the features of Hexadecimal number system with suitable examples for

conversion of decimal into Hexadecimal and Hexadecimal into binary.1.1.6 Study Hexadecimal fraction and conversion of Hexadecimal into direct binary and

back.1.1.7 State the need for binary codes and list different types of binary codes.1.1.8 Study the BCD codes, excess-3 code, Gray code and binary weighted codes with

suitable examples.1.1.9 Study ASCII code1.1.10 Study EBCDIC and error detecting and correcting codes.1.1.11 With suitable examples give the idea of binary arithmetic such as addition,

subtraction, multiplication and division.1.2. Understand Boolean algebra and logic simplifications1.2.1 State the importance of logic theory and its applications.1.2.2 Study the circuit diagram and explain the switching functions of AND, OR, XOR, and

give their logic symbols1.2.3 Draw symbols for NAND, NOR, NOT operation and discuss the advantages of using

universal logic gates.1.2.4 Know about the sum of product (SOP) expression, product of sum expression (POS.)

minters and max terms1.2.5 State the need for simplifying Boolean expression

1.2.6 Study the straight simplification with the help of logic rules and truth tables.1.2.7 Study the basic principle of Karnaugh map..1.2.8 Study two variables, three variables and four variables K-maps with the help of

suitable examples and its reductions.1.2.9 Study an idea of Don’t care terms.1.2.10 Study reduction of Boolean expressions using K-map.1.2.11 Study the idea of simplification in both SOP and POS form with the help of example1.2.12 List the advantages and disadvantages of Karnaugh map.

MODLULE– II2.1. Understand logic families2.1.1 Classify digital logic gates on the basis of number of components incorporated with

examples.2.1.2 Study logic families.2.1.3 Distinguish between positive and negative logic.2.1.4 Describe how to represent logic gates by switches.2.1.5 Give the detailed circuit description of transistor transfer logic and TTL inverter.2.1.6 Know the terms VIL, VIH, VOL, VOH, Noise margin, noise immunity propagation

delay.2.1.7 Know the term current sourcing and current sinking, fan-in, fan-out, power

dissipation, speed power product.2.2.Understand combinational logic circuits2.2.1 Study combinational logic circuits.2.2.2 Design half adder, full adder, half subtractor, and full subtractor.2.2.3 Design BCD adders.2.2.4 Study the importance of Look-ahead carry adder with examples.2.2.5 Study multiplexer & demultiplexer circuits2.2.6 List and explain the various applications of multiplexers and demultiplexers.2.2.7 Explain the operation of encoders and decoders.2.2.8 Explain various decoders such as BCD to decimal, binary to excess 3 code, binary to

gray code and BCD to 7 segment with suitable examples.2.2.9 Study digital comparators.

MODULE – III

3.1. Understand sequential logic circuits3.1.1 Study the sequential logic circuits3.1.2 Distinguish between synchronous and asynchronous sequential logic circuits3.1.3 Construct SR flip flop using NAND gates3.1.4 Explain JK flip flop with the help of truth table and timing diagram.3.1.5 Study the need for preset and clear inputs3.1.6 Know the race around condition3.1.7 Study master slave JK flip flop3.1.8 Explain D flip flop, T flip flop with the help of diagram and truth table3.1.9 Study the working of shift registers-serial in serial out, parallel in parallel out,

parallel in serial out and serial in parallel out3.1.10 Differentiate right shift and left shift registers3.1.11 Give the application of shift registers3.1.12 Know the working of ring counter and its applications3.1.13 Explain Johnson counter and its applications3.1.14 Study Binary counters3.1.15 Differentiate synchronous and asynchronous counters

3.1.16 Study ripple counter3.1.17 Design and implement modulo- N asynchronous counter upto 4 bit

MODULE – IV

4.1. Understand different types memories4.1.1 Explain semi conductor memory4.1.2 List various types of memory4.1.3 Distinguish between ROM and RAM4.1.4 Explain basic principle of working of ROM4.1.5 State different types of ROM4.1.6 List different ROM and RAM ICs4.1.7 Explain the working of dynamic memory4.1.8 Compare Static RAM, Dynamic RAM4.1.9 State the difference between Flash ROM and NVRAM4 .2. Understand D to A and A to D converters4..2.1 Define accuracy4..2.2 Define resolution4..2.3 Calculate accuracy and resolution for DAC4.2.4 Draw the block diagram of simple binary weighted DAC4.2.5 Explain simple binary weighted DAC4.2.6 Explain briefly R- 2R ladder type network for DAC4.2.7 Study ADC4.2.8 Define & calculate resolution for ADC4.2.9 Study counter-ramp type ADC4.2.10 List the advantages and disadvantage of counter ramp type ADC4.2..11 Study successive approximation ADC4.2.12 List the advantages and disadvantages of SA- ADC

CONTENT DETAILS

MODULE – INumber System and Boolean algebraNumber systems - decimal, binary, octal, Hex number system – conversion from one system toanother system – Fractions in all the number systems and its conversions - use of binary codes,different types of binary codes, binary coded decimal, self complementing codes, ASCII Code,EBCDIC error detecting and correcting codes, binary addition, subtraction, multiplication anddivision. 1’st complement and 2’s complement method of subtractionIntroduction to logic theory, switching functions AND, OR, NOT, NOR, NAND, EX-ORoperations.The sum of products (SOP) expression, product of sum (POS) expression, switching circuits, truthtables, Boolean theorems and postulates - simplifications of Boolean expressions - simplificationsusing postulates and Karnaugh map.

MODULE – IILogic familiesSSI, MSI, LSI, VLSI and ULSI, existing logic families, positive and negative logic - TransistorTransistor Logic- standard TTL and Schottky TTL, TTL inverter, , noise margin, noise immunity,propagation delay, current sourcing and current sinking, fan in, fan out, power dissipation, speedpower product, Comparison of advantages and disadvantages of various logic familiesCombinational Logic CircuitIntroduction – Design half adder, full adder, half subtractor, full subtractor, BCD adder-Look ahead Carry adder, multiplexer/data selector - basic 2 to 1MUX, 4 to 1 MUX, applications of

the MUX, demultiplexer, 1 to 2 demultiplexer, 1 to 4 demultiplexer, – multiplexer anddemultiplexerIcs-Encoders and decoders, encoder and decoder Ics.BCD to decimal, BCD to 7 segment decoder – encoder – digital comparators

MODULE – IIISequential Logic CircuitsIntroduction - SR flip flop, SR latch - SR flip-flop using NAND gates, JK flip- flop with preset andclear inputs, D flip-flop, T flip-flop, Master Slave flip-flop – Flip flop ICsBinary counters-design and implementation of asynchronous modulus N counter, up downcounters-examples- Design and implementation of mod N synchronous (upto 4 bit) counters, andrandom sequence generators-examples.Study of counter ICs, implementation of mod N counters.Shift registers, serial in serial out, parallel in parallel out, serial in parallel out, parallel in serial outshift registers, left shift and right shift registers applications of shift registers, ring counter, Johnsoncounter and applications.

MODULE – IVMemoriesSemi conductor memory- Non-volatile memories – ROM – PROM – EPROM – EEROM – FlashROM Volatile memories– RAM – static RAM - dynamic RAM –– specifications of memory likespeed, access time,capacity, typeDigital to analog conversion – Binary weighted DAC – R-2R ladder type network for DAC –Analog to digital conversion – Ramp type ADC – Successive Approximation ADC

TEXT BOOKS1. Digital fundamentals - Floyd & Jain2. Fundamentals of digital circuits - A. Anand Kumar

REFERENCE BOOKS1. Digital system principles and applications - Ronald J. Tocci2. Digital Integrated Circuits - Bogart3. Digital Logic Applications and Design - John M Yarbrough4 Digital computer fundamentals - Thomas. C. Bartee5. Digital electronics- An introduction to theory and practice - Gothman6. Digital design - Mano7 Digital Electronics - Green