Computer Fundamentals

4

INPUT AND OUTPUT DEVICES

Contents

• Input-output unit—Input unit, output unit
• Input devices—Human data entry devices, source data entry devices
• Human data entry devices
  • Keyboard
  • Pointing devices—Mouse, trackball, joystick, digitizing tablet
  • Pick devices—Light pen, touch screen
• Source data entry devices
  • Audio input device (microphone, sound card, speech recognition)
  • Video input device (video camera, digital camera)
  • Optical input devices—Scanner (hand held, flat bed), OCR, MICR, OMR, barcode reader
• Output devices—Hard copy devices, soft copy devices
• Hard copy devices
  • Printer—Impact printers (dot matrix, daisy wheel, drum), non-impact printers (ink-jet, laser)
  • Plotter—Drum plotter, flatbed plotter
  • Computer output on microfilm (microfiche) ...