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5. CHAPTER. Input and Output. Competencies. 1. Keyboards 2. Direct-entry input devices 3. Terminals 4. Voice recognition systems 5. Monitors and their standards 6. Printers and plotters 7. Voice-output devices. Overview. Input and output Binary language

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  1. 5 CHAPTER Input and Output

  2. Competencies 1. Keyboards 2. Direct-entry input devices 3. Terminals 4. Voice recognition systems 5. Monitors and their standards 6. Printers and plotters 7. Voice-output devices

  3. Overview • Input and output • Binary language • Output devices do the reverse

  4. Data Entry • Keyboard entry • Direct entry

  5. Data Entry • Point-of-sale (POS) • keyboard • bar scanning • Wand reader • Platform scanner A Point-of-sale transaction

  6. Windows key Traditional keyboard Numeric keypad Function keys Escape key Navigation keys Spacebar

  7. Keyboard Entry • Ctrl, Alt and Shift keys

  8. Keyboard Entry • Terminals • Dumb terminal • Intelligent terminal • Network terminal • Internet terminal

  9. Direct Entry • Machine-readable format • Three categories • Pointing devices • Scanning devices • Voice-input devices

  10. Pointing Devices Traditional keyboard • Mouse • Trackball • Touch-surface • Touch screen

  11. Pointing Devices • Light pen • Digitizer • Digital camera • Digital notebook

  12. Pen-based computer: recording inventory

  13. Scanning Devices • Image scanner • Fax machine • Bar-code readers

  14. Fax Machines • Fax machine • Fax modem cards

  15. Bar-Code Readers • Photoelectric scanners • Bar code

  16. Scanning Devices • Magnetic-ink character recognition (MICR) • Optical-character recognition (OCR) • Optical-mark recognition (OMR)

  17. Voice-Input Devices • Convert speech into digital code • Microphone • Voice recognition systems

  18. Voice Recognition Systems • Continuous speech • Discrete-word

  19. Monitor Standards • VGA • Super VGA or SVGA • XGA

  20. Serial mouse, modem, keyboard Video monitor Cables

  21. Monitors • CRTs • Flat-Panel or LCD • Passive-matrix or dual-scan • Active-matrix • Pixel size

  22. Printers • Ink-jet Printer • Laser Printer

  23. Printers • Thermal Printer • Dot-matrix • Chain printer

  24. Plotters • Pen Plotter • Ink-Jet Plotter • Electrostatic Plotter • Direct Imaging Plotter

  25. Plotters • Direct Imaging Plotter • Electrically heated pins create images on heat-sensitive paper • Expensive paper required • Two-color output only

  26. Voice-Output Devices • Prerecorded vocalized sounds • A sound card and a speaker system

  27. A Look into the Future • Digital TV • Federal Communications Commission • PC/TV

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