What is computer peripheral?

  • The devices, which are attached to the main computer machine are called as computer peripherals. 
  • A peripheral device is defined as a computer device, such as a keyboard or printer, that is not part of the essential computer (i.e., the memory and microprocessor). These auxiliary devices are intended to be connected to the computer and used.
  • Peripheral devices can be external or internal.
    • Examples of external peripherals include mouse, keyboard, printer, monitor, external Zip drive or scanner.
    • Examples of internal peripherals include CD-ROM drive, CD-R drive or internal modem.
  • Today's new devices, such as tablets, smartphones and wearable computing devices are considered peripherals as they can be connected and used on a computer system. 
  • The difference, however, is that these devices can run independently of the computer system.

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