A computer may perform various tasks considerably, given its default software configuration. But without a keyboard and a mouse, the computer cannot fully function to its optimum performance. Thus, computer peripherals are increasingly becoming essentials in every personal computer.

Computer hardware components are becoming very important in a way that they allow people to communicate and interact with the computer. Although other computer peripherals may be considered only as an optional component, they can be extremely useful in a unique way. A printer lets you have a hard copy of any document in your personal computer, while an image scanner allows you to scan your photos or any printed text and store them in your computer. Input devices such as joysticks allow you to play video games on a personal computer with ease, making them effective replacements for keyboards as gaming controllers.