5 55 CHAPTER Input and Output. 5 © The McGraw-Hill Companies, Inc. 2002 Objectives Variety of input devices Voice recognition Variety of output devices.

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Input and Input and OutputOutput

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ObjectivesObjectives

• Variety of input devices• Voice recognition• Variety of output

devices• Multifunctional devices• Telephony• Type of terminals

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InputInput

• Keyboard entry

• Direct entry

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Direct EntryDirect Entry

• Pointing devices

• Scanning devices

• Voice-input devices

TraditionTraditional al

keyboardkeyboard

TraditionTraditional al

keyboardkeyboard

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Pointing DevicesPointing Devices

• Mouse

• Trackball

• Touch-surface

• Touch screen

• Light pen

• Digitizer

• Digital camera

• Digital notebook

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Scanning DevicesScanning Devices

• Image scanner

• Fax machine

• Bar-code readers

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OthersOthers

• Magnetic-ink character recognition (MICR)• Optical-character recognition (OCR) • Optical-mark recognition (OMR)

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Voice-Input DevicesVoice-Input Devices

• Microphone

• Sound card

• Special software

• Discrete and Continuous

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Output DevicesOutput Devices

• Monitor

• Printers

• Plotters

• Voice

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Monitor StandardsMonitor Standards

• SVGA

• XGA

• SXGA

• UXGA

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Monitor TypesMonitor Types

• CRTs

• Flat-Panel or LCD

• eBook readers

• Data projectors

• hdtv

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PrintersPrinters

• Ink-jet Printer

• Laser Printer

• Thermal Printer

• Dot matrix

• Chain printer

• Plotters

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Audio Output DevicesAudio Output Devices

• Easy and common

• Requires

– Sound card

– Speaker system

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TelephonyTelephony

• Uses Internet rather than traditional

• Requires– Internet telephone– Internet– Special service provider

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TerminalsTerminals

• Dumb terminal • Intelligent terminal• Network terminal• Internet terminal

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A Look into the FutureA Look into the Future

• Combination of TV and

Computer

• Web TV

• Broadcast Technology

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