The CPU

The Central processing unit

The brain of the computer

The CPU sends signals to control the other parts of the computer, almost like how a brain controls a body.


The CPU is an electronic machine that works on a list of things to do, called 'instructions'. It reads the list of instructions, one instruction at a time, and does each one in order. A list of instructions that a CPU can read is a computer program. A machine that can perform the job of a CPU is often called a Turning machine by mathematician



See How the CPU Works In One Lesson

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