| Component | Purpose | Properties | Picture | 
|---|---|---|---|
| Cental Processing Unit | responsible for executing a sequence of stored instructions called a program | referred as the brain of the computer | |
| Power Supply | designed to turn on and off using a signal from the motherboard, and provide support for modern functions such as standby mode | converts about 100-120 volts of AC power to low-voltage DC power for the internal components to use | |
| Motherboard | It is the main circuit board in the computer | It connects many components like RAM, CPU, expansion slots and the heat sinks. |