The base unit contains many different parts that the computer needs to work. The most important ones are:
| The Motherboard |
This is a large circuit board that connects together all the other parts of the computer which are plugged into it. |
| The Power Supply Unit |
The Power Supply Unit supplies power to the computer system for it to work. |
| The Processor |
This is the ‘brain' of a computer because it performs all the calculations that the computer does. The faster the processor is the faster your computer will work. |
| Expansion Cards |
You can plug expansion cards into sockets on the motherboard to add extra features to your computer. A sound card will let it play high quality sound and a video card will let it display information on a monitor. |
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