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Output Devices in Computer

Output devices are used to transfer the information stored in the computer of the result of any processing done by the computer to the outside world. Through it computer conveys the result to user. There are many output devices available in market. Commonly of them are:
  • Monitor or VDU (Video Display Unit)
  • Printer
  • Projector
  • Speaker / Head Phone / Ear Phone
  • Plotter
Monitor or VDU (Video Display Unit)
Monitor is very similar to a television, shows all the processed result and program of CPU. It is very important output device, without it user of computer is almost blind. It gives easy interface to machine. It comes in many size 9”, 12”, 14”, 15”, 17”, 19”, 20”, 21”, 24”, 29” and many more.

Printer are the most popular output devices. They provide information in a permanent readable form. They produce printed output of results, program and data.

Types of printer:
  • Impact Printers 
    • Dot-Matrix printers 
    • Letter Quality printers
  • Non-impact printers
    • Ink-Jet Printers
    • Laser Printers

Projector is a output device which used to produce projection of computer output on screen. It is used for giving presentation.


Speaker / Head Phone / Ear Phone
This is sound device which produce sound output like music, tone and speech.


Plotter is a important output device in computer system used for plotting processed data or maps.


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