Data In, Information Out Slide No. 1

Data In Information Data In Information OutOut

Data In Information Data In Information OutOut

CS 104CS 104

Data In, Information Out Slide No. 2

Understanding Input: Understanding Input: Not Just Data EntryNot Just Data Entry Input Devices: Input Devices: The Computer’s “Senses”The Computer’s “Senses”

Input Devices in Business & IndustryInput Devices in Business & Industry Biological Feedback DevicesBiological Feedback Devices Chemical DetectorsChemical Detectors Output Devices: Output Devices: Engaging Our SensesEngaging Our Senses

PrintersPrinters Sound Cards & SpeakersSound Cards & Speakers Tactile FeedbackTactile Feedback

Input and Output

C

Module

Data In, Information Out Slide No. 3

Data In, Information OutUnit 2C Objectives

Data In, Information OutUnit 2C Objectives

Input DevicesInput Devices Pointing DevicesPointing Devices Keyed Data AlternativesKeyed Data Alternatives Output DevicesOutput Devices Hard Copy versus Soft Hard Copy versus Soft

CopyCopy

Data In, Information Out Slide No. 4

KeyboardsKeyboardsnumeric keyboardnumeric keyboardfunction keysfunction keystoggle keystoggle keysCaps Lock keyCaps Lock keystatus indicatorsstatus indicators

Input Devices:The Computer’s “Senses”

C

Module

Input &

Output

Data In, Information Out Slide No. 5

Cursor & Cursor MovementsCursor & Cursor Movementsinsertion pointinsertion pointcursor movement keys (arrow keys)cursor movement keys (arrow keys)repetitive strain injury repetitive strain injury (RSI)(RSI)/cumulative /cumulative

trauma disorder trauma disorder (CTD)(CTD)

Input Devices:The Computer’s “Senses”

C

Module

Input &

Output

Ergonomic keyboards help prevent CTD

Data In, Information Out Slide No. 6

Keyboards

QWERTYQWERTY DVORAKDVORAK Foreign Language (Chinese, Foreign Language (Chinese,

Japanese)Japanese) Membrane-switch (fast food)Membrane-switch (fast food)

Data In, Information Out Slide No. 7

Mouse operationsMouse operationsClickingClickingDraggingDraggingDouble-ClickingDouble-Clicking

Pointing Devices

C

Module

Input &

Output

click

click

click

Data In, Information Out Slide No. 8

Pointing Devices(mice)

Mouse (1-4 buttons, mechanical, Mouse (1-4 buttons, mechanical, optical)optical)

Trackball (Ball is on the top, less space, Trackball (Ball is on the top, less space, used in laptopsused in laptops

Joystick (game playing and controlling Joystick (game playing and controlling robotsrobots

Data In, Information Out Slide No. 9

Pointing Devices

C

Module

Input &

Output

TouchpadTouchpad Touch-Sensitive ScreensTouch-Sensitive Screens Pen-Based SystemsPen-Based Systems

Data In, Information Out Slide No. 10

Pen-Based Systems

Apple Newton (personal digital Apple Newton (personal digital assistants)assistants)

light pen (photoelectric cell to indicate light pen (photoelectric cell to indicate position)position)

digitizing table (stylus)digitizing table (stylus)

Data In, Information Out Slide No. 11

Touch Entry

Touch screens - touch a specific part of Touch screens - touch a specific part of the screen to execute a commandthe screen to execute a command

Kiosks - Disney WorldKiosks - Disney World some laptops are using this instead of some laptops are using this instead of

the embedded trackballthe embedded trackball

Data In, Information Out Slide No. 12

Additional Input Devices

C

Module

Input &

Output

SoundcardsSoundcards Microphones & Speech RecognitionMicrophones & Speech Recognition Video Capture CardsVideo Capture Cards CamerasCameras ScannersScanners

Handheld scanner

Data In, Information Out Slide No. 13

Scanning Devices

Optical recognition systems Optical recognition systems MICR (magnetic Ink Character MICR (magnetic Ink Character

Recognition) Recognition) Bar code readers - UPC Universal Bar code readers - UPC Universal

Product CodeProduct Code Optical mark reader “bubble test”Optical mark reader “bubble test” Optical scanners for scanning in text, Optical scanners for scanning in text,

graphics (digitize)graphics (digitize)

Data In, Information Out Slide No. 14

Voice Recognition Devices

Usually require “training”Usually require “training” limited vocabularylimited vocabulary

Data In, Information Out Slide No. 15

Video Digitizers

Capture input from any video device Capture input from any video device (VCR, television, camcorders, etc..,)(VCR, television, camcorders, etc..,)

audio digitizers - look at programs-audio digitizers - look at programs->accessories->multimedia>accessories->multimedia

Data In, Information Out Slide No. 16

Input Devices in Business & Industry

C

Module

Input &

Output

source data automationsource data automation image processing systemsimage processing systems magnetic ink character recognition magnetic ink character recognition

(MICR)(MICR)

bar code readersbar code readers universal product codeuniversal product code mark sense character recognitionmark sense character recognition optical mark reader optical mark reader (OMR)(OMR)

Data In, Information Out Slide No. 17

Additional Input Devices

C

Module

Input &

Output

Biological feedback devicesBiological feedback devices Chemical detectorsChemical detectors

Virtual reality programs use helmets

to enable users to “move” through a simulated “world.”

Data In, Information Out Slide No. 18

Output devices

MonitorMonitor PrinterPrinter PlotterPlotter

Computer Computer Output Output

Microfilm/MMicrofilm/Microficheicrofiche

WP is aneasy to use soft-

Data In, Information Out Slide No. 19

Monitors

C

Module

Input &

Output

cathode ray tube cathode ray tube (CRT)(CRT) liquid crystal display liquid crystal display (LCD)(LCD)

Laptop color LCD display

Desktop computers use a CRT

Data In, Information Out Slide No. 20

Screen Size

C

Module

Input &

Output

Quoted Size and Actual Viewable Area

Monitor Size Viewable Area

21 inches 20 inches

17 inches 16 inches

15 inches 14 inches

monitor size - for home (bigger the better)

Data In, Information Out Slide No. 21

Additional Monitor Characteristics

C

Module

Input &

Output

dot pitchdot pitch interlaced monitorsinterlaced monitors noninterlaced monitorsnoninterlaced monitors multiscan monitorsmultiscan monitors

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Dot Pitch dot pitch - the distance between dot pitch - the distance between

pixelspixels typical dot pitch .28typical dot pitch .28

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Graphics Adapter Board

board that plugs into an expansion slot to board that plugs into an expansion slot to interface with the monitorinterface with the monitor

also known as the video cardalso known as the video card each board uniqueeach board unique some come with video memory (VRAM or some come with video memory (VRAM or

DRAM, video and dynamic respectively)DRAM, video and dynamic respectively) refresh rate - usually 70 times per second - refresh rate - usually 70 times per second -

interlaced and non-interlacedinterlaced and non-interlaced

Data In, Information Out Slide No. 24

Video AdaptersVideo Adaptersvideo RAM (VRAM)video RAM (VRAM)video graphics adapter (VGA)video graphics adapter (VGA)super VGAsuper VGArefresh raterefresh rateflickerflicker

Output Devices:Engaging Our Senses

C

Module

Input &

Output

Data In, Information Out Slide No. 25

Video Graphics Adapter

C

Module

Input &

Output

Common PC resolutions

640 x 480

800 x 600

1024 x 768

1600 x 1200

Data In, Information Out Slide No. 26

Video Graphics Adapter

C

Module

Input &

Output

Common color depthColor Depth Number of colors

VGA (4 bits) 16

256 Color Mode (8 bits) 256

High Color (16 bits) 65,536

True Color (24 bits) 16,777,216

Data In, Information Out Slide No. 27

Audio Output

need a sound card and speakersneed a sound card and speakers some sound cards can read a text filesome sound cards can read a text file speech synthesis - simpler than speech synthesis - simpler than

speech recognition ( no variability)speech recognition ( no variability)

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Printer

impactimpact non-impactnon-impact

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Impact Printers

produce a page, a line, or a character produce a page, a line, or a character at timeat time

line printers - only text- no graphicsline printers - only text- no graphics dot-matrixdot-matrix

Data In, Information Out Slide No. 30

Nonimpact Printers

C

Module

Input &

Output

inkjet inkjet laser laser thermal transferthermal transfer dye sublimationdye sublimation snapshotsnapshot multifunctionmultifunction

Data In, Information Out Slide No. 31

Additional Output Devices

C

Module

Input &

Output

plottersplotters tactile feedbacktactile feedback

For the latest news on haptics, see the Haptics Community Web Page

Data In, Information Out Slide No. 32

Plotter

usually larger and use pens or usually larger and use pens or electrostatic charges to create electrostatic charges to create imagesimages

generally more expensivegenerally more expensive

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Computer Output Microfilm/Microfiche (COM)

stores images on a roll of filmstores images on a roll of film 4x6 sheets4x6 sheets less expensiveless expensive faster than normal printingfaster than normal printing need a special readerneed a special reader may soon be replaced by CD-ROM may soon be replaced by CD-ROM

which can store 1 million pages or 680Mwhich can store 1 million pages or 680M

Data In, Information Out Slide No. 34

Hard/Soft Copy

printed outputprinted output microfilmmicrofilm microfichemicrofiche CD-ROMCD-ROM

monitor displaymonitor display audio outputaudio output

Dictionary

Data In, Information Out Slide No. 35

Questions?Questions?