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Input and Input and OutputOutput
© The McGraw-Hill Companies, Inc. 2002
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ObjectivesObjectives
• Variety of input devices• Voice recognition• Variety of output
devices• Multifunctional devices• Telephony• Type of terminals
© The McGraw-Hill Companies, Inc. 2002
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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
© The McGraw-Hill Companies, Inc. 2002
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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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© The McGraw-Hill Companies, Inc. 2002
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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
© The McGraw-Hill Companies, Inc. 2002
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