In a Computer System, Which Device is Functionally Opposite of a Keyboard?

  1. joystick
  2. Trackball
  3. Mouse
  4. Printer
Monis Rasool Professor Asked on 4th July 2015 in Computers.
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    In a Computer System, Printer is functionally Opposite of a Keyboard. Printer is a external hardware device which is responsible for taking command to  print and generating hard copy. Print is commonly used to print text, images and photo. There is many type of computer:

    • 3D printer
    • All-in-one (AIO) printer
    • Dot Matrix printer
    • Inkjet printer
    • Laser printer
    • LED printer
    • Multi function printer (MFP)
    • Plotter
    • Thermal printer

    Printer are also classified by the characteristics like:

    • Quality type
    • Speed
    • Impact or non impact
    • Graphics
    • fonts

    You know that the world oldest surviving printed work is the Diamond Sutra (a Buddhist text dated to 868 AD). the first printer was made by Chester Carlson in the year 1938.

    Monis Rasool Professor Answered on 8th July 2015.
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