The Motherboard and The CPU
The CPU (Central Processing Unit) is the circuitry inside the computer that runs a program on a computer. It does this by performing three steps called: Fetch, Decode and Execute. Fetch is where the CPU retrieves an instruction. Decode is where the CPU breaks up the parts into portions which are significant to other parts of the computer. Execute is where the CPU performs either one action or a series of actions and the CPU is electrically connected so they can perform all or part of the desired instruction.