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Input and Output

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Competencies1. Keyboards2. Direct-entry input devices3. Terminals4. Voice recognition systems5. Monitors and their standards6. Printers and plotters7. Voice-output devices

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OverviewInput and

outputBinary

languageOutput devices

do the reverse

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Data Entry

Keyboard entryDirect entry

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Data EntryPoint-of-sale

(POS)keyboardbar scanningWand readerPlatform

scanner

A Point-of-sale A Point-of-sale transactiontransactionA Point-of-sale A Point-of-sale transactiontransaction

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TraditionTraditional al

keyboardkeyboard

TraditionTraditional al

keyboardkeyboardEscape keyEscape keyEscape keyEscape key

Navigation Navigation keyskeys

Navigation Navigation keyskeys

Function keysFunction keysFunction keysFunction keys

SpacebarSpacebarSpacebarSpacebar

Numeric keypadNumeric keypadNumeric keypadNumeric keypad

Windows keyWindows keyWindows keyWindows key

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Keyboard EntryCtrl, Alt and Shift keys

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Keyboard Entry

Terminals Dumb terminal Intelligent terminal Network terminal Internet terminal

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Direct Entry

Machine-readable format

Three categoriesPointing devicesScanning devicesVoice-input devices

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Pointing Devices

MouseTrackballTouch-surfaceTouch screen

TraditionTraditional al

keyboardkeyboard

TraditionTraditional al

keyboardkeyboard

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Pointing Devices

Light pen Digitizer Digital camera Digital notebook

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Pen-based computer: Pen-based computer: recording inventory recording inventory Pen-based computer: Pen-based computer: recording inventory recording inventory

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Scanning Devices

Image scanner Fax machine Bar-code readers

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Fax Machines

Fax machine Fax modem cards

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Bar-Code Readers

Photoelectric scanners

Bar code

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Scanning DevicesMagnetic-ink character

recognition (MICR)Optical-character recognition

(OCR) Optical-mark recognition (OMR)

153

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Voice-Input DevicesConvert

speech into digital code

MicrophoneVoice

recognition systems

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Voice Recognition SystemsContinuous

speechDiscrete-word

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Monitor Standards

VGA Super VGA or SVGA XGA

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Cables Cable Port Devices

Parallel printer, CD-ROMdrive, Zip drive

USB modem, joy stick,scanner

Cable Port Devices

Parallel printer, CD-ROMdrive, Zip drive

USB modem, joy stick,scanner

Serial mouse, modem, keyboard

Video monitor

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Monitors

CRTsFlat-Panel or LCD

Passive-matrix or dual-scanActive-matrix

Pixel size

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Printers

Ink-jet PrinterLaser Printer

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Printers

Thermal PrinterDot-matrixChain printer

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Plotters

Pen PlotterInk-Jet PlotterElectrostatic

PlotterDirect Imaging

Plotter

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PlottersDirect Imaging Plotter

Electrically heated pins create images on heat-sensitive paper

Expensive paper required

Two-color output only

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Voice-Output Devices

Prerecorded vocalized soundsA sound card and a

speaker system

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A Look into the Future

Digital TVFederal Communications

CommissionPC/TV

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