1.1.1 (1) - Parts of A CPU

What is a processor?

The internal hardware component of a computer responsible for executing the instructions of programs.

What are the 3 main parts of the CPU?

CU, ALU and Registers.

What is the purpose of the CU?

• Directs the flow of data around the CPU

• Sends and receives control signals

• Follows the FDE cycle

What is the purpose of the ALU?

• Arithmetic calculations

• Boolean/Logical Operators

• Comparisons between values

What are Registers?

Registers are small amounts of super fast memory within the CPU.

What are the 3 things Registers can store?

data, instructions and addresses

What is the clock?

A component of the CU used to synchronise the operations of other components.

How does it work?

It generates regular electronic pulses by emitting a signal that continuously switches between low (0) and a high (1) state, controlling the timing of all CPU operations.