Difference between Input and Output device

Difference between Input and Output devices

Input Device

 Data and instructions are entered into a computer through input devices. An input device first converts desired input data and instructions into a suitable binary form (i.e., 0 & 1) and then feeds it into the CPU. The commonly used input device is the keyboard. A number of other input devices have been developed that do not require typing. These are
  •  Mouse
  • Joystick
  • Trackball
  • Light pen
  • Graphic tablet
  • Touch screen
    The above listed devices permit the user to select an image on the computer screen by pointing to it. Therefore, these devices also called pointing devices.
    Voice input  system have also been developed. A microphone is used as an input in such devices. In applications, where computers with vision are required, namely robots and compute based security system, computer use optical and semiconductor devices that are sensitive to light. Such input devices produce digital signals corresponding to images, pictures etc.



Input devices

Output devices

Output devices are used to transfer information stored in the computer or the result of any processing done to the outside world. There are several types of output devices available today ,but the most commonly used ones include video monitors and printers. Printers provide a printed record on paper.

Following are some output devices
  • Monitor
  • Printers
  • Plotters 
  • Multimedia projector
  • Speech synthesizer

Output devices




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