iGCSE Computer Science - Distance Learning

Tutor Marked Assignment 6
Tutor Marked Assignment 8 (Programming)

The Purpose of The CPU

Imagine the CPU as the brain of the computer – it’s needed to process all of the data coming into the system, and tells the system how to react to that data.

The purpose of the CPU is to control both hardware and software to the user, provide an interface (hiding the complex systems), and to manage memory. To do this, an Architecture needs to be used to allow the CPU to understand how to process the instructions within the device.

The tasks that the CPU performs can be broken down into Fetch, Decode, and Execute. This is referred to as the Fetch Execute Cycle and allows your computer to function.