| A | B |
|---|
| CPU | Sometimes called the brain of the computer. Its job is to carry out commands |
| Gigahertz (GHZ) | speed of a processor at billions of instructions per second. |
| Motherboard | Main ciruit board on a computer. Connects directly to every part of a computer. |
| RAM | Short term computer memory; data here disappears when the computer is turned off. |
| Desktop Computer | Computer that is easy to upgrade and expand. |
| Laptop Computer | Smaller computer that can be battery powered. |
| Booting | Process of starting up a computer during which it runs tests, checks for new hardware and opens the operating system. |
| Operating system | Manages the computer's memory, processes and its software and hardware. |
| Windows | Operating system preloaded on most personal computers |
| Mac OS | Operating system that accounts for 7% of computers. |
