Hardware is any part of your computer that you can physically touch. Although computer hardware varies greatly from machine to machine, all computers will have hardware that falls into the following four categories:
- Input devices: Any device that allows raw data to be entered into the computer system.
- System Unit: A metal enclosure or “case” that contains the internal components of a computer. The system unit takes raw data from the input devices, processes it into useful information, and then sends it to the output devices.
- Storage Unit: Sometimes known as "secondary" or "auxiliary" storage. This is where information can be stored so that it can be retrieved at a later date.
- Output devices: any device that takes processed data and displays it in a meaningful way.
