Computer Peripherals

By Adrian Chow

What are peripherals?

A peripheral is a device attached to a computer, the gadgets that make you able to interact with a computer, to store your online work and to print/hear/show/etc you the result (e.g sound, printed paper, etc). Peripherals are one of the most important parts of a computer.

Types of peripherals

There are three different types of peripherals:

  • Input, used to interact with, or send data to the computer (mouse, keyboards, etc.)
  • Output, which provides output to the user from the computer (monitors, printers, etc.)
  • Storage, which stores data processed by the computer (hard drives, flash drives, etc.)

Note: There are lots more Input / Output devices in this world. The ones above are the most commonly used.


Peripherals are very important to computers and to computer history. It's a necessary ingredient into making computers. Without them, we can't work with computers, much less than turn it on. However, lots of people use computer peripherals everyday, yet they don't know the term 'peripheral'. Peripherals are important to course of computer science.