What is a computer?

There are many kinds of computers designed to do many different things. The most popular type of computer - and the one we will be discussing here - is the personal computer or PC. A computer is really just a tool that lets you do something. What you can do is determined by the type of computer you're using and what actions it allows you to take.

A personal computer is designed usually with a single person in mind, and that person is known as a user. Different personal computers exist because users wish to do different things. A user uses a computer to do different things, such as typing a letter or accessing the Internet.