Input and Output Input and Output By Stephen Folmer

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Input and Output Input and Output By Stephen Folmer Powered By Docstoc
					Input and Output
  By Stephen Folmer
  Comm 165 MWF 9-10
      Dr. Cagel
       What is Input?

 Input consists of data and
  instructions.
What are Input devices?

 Input devices translate what
  people understand into a form
  that computers can process.
 Examples are keyboards, mice,
  joysticks, scanners.
           Keyboards

   Traditional
   Flexible
   Ergonomic
   Wireless
   PDA
   Keyboard Features

 A computer keyboard combines a
  typewriter keyboard with a
  numeric keypad.
 Keyboards also have special
  keys which perform a certain
  action when combined with
  other keys
       Pointing Devices
   Mouse
   Joystick
   Touch Screen
   Light Pen
              Mouse
 A mouse controls the pointer that
  appears on the monitor.
 Mechanical Mouse- this is the typical
  mouse with the ball on the bottom
  and buttons.
 Optical Mouse- This is a mouse that
  has no moving ball. It emits and
  senses light to control movement.
 Cordless Mouse- this mouse has no
  cords and all movement is
  transmitted through infrared light.
           Joystick
 The joystick is commonly used
  for computer video games.
 Controls game actions by
  varying pressure, speed, and
  direction of the joystick.
       Touch Screen
 This is a certain type of monitor
  with a clear plastic outer layer.
 Behind the plastic are
  crisscrossed infrared beams of
  light.
       Scanning Devices
   Flatbed Scanner
   Portable Scanner
   Bar Code Readers
   Character and Mark
    Recognition Devices
Image Capturing Devices
 Digital Camera
 Digital video Camera
      What is Output?
 Output is processed data or
  information. Text, graphics,
  audio, and video are types of
  output.
 Output devices translate
  processed information into a
  form humans can understand.
            Monitors
   Cathode-ray tube
   Flat-Panel
   E-books
   Data projectors
            Printers
   Ink-jet printers
   Laser Printers
   Thermal Printers
   Dot matrix
   Plotters
   Photo printers
   Portable printers
 Combination input and
    output devices
 Fax Machines
 Multifunction Devices- all in
  one devices.
 Internet Telephone

				
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posted:3/21/2010
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