Computer components are all the physical pieces, or hardware, that are assembled to make a computer function. Each large component, such as the monitor, keyboard and system unit, is made up of many smaller pieces.
There are some differences between desktop and laptop computers, but most of them have the same basic components. For instance, the processes of a computer are controlled by the system unit. This includes the central processing unit, or CPU, which runs the show, and the random access memory, or RAM, which temporarily stores information. The hard disk drive, which contains most of the computer's programs and files, is another component of the system unit. Because of its many functions, this unit contains numerous small electronic parts.