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GCSE Computer Science · key term
The CPU component that decodes instructions and coordinates processing by sending control signals to other components.
Used by AQA and Edexcel
Paper 2
Revise: CPU Components and Main MemoryThe control unit decodes instructions: it interprets them to determine which operation is required. It then coordinates the CPU’s work by sending control signals to other components. For an addition instruction, for instance, it directs the ALU to perform the calculation rather than performing the addition itself.
Specification 3.1.1 · Paper 1
The CPU component that decodes instructions and sends control signals to coordinate their execution and the movement of data.
Explain a component’s job rather than just expanding its abbreviation: the ALU performs calculations and logical operations; the control unit coordinates operations and decodes instructions.
The control unit decodes and coordinates; the ALU performs arithmetic and logical operations.
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The control unit (CU) decodes instructions and sends signals that coordinate operations and the movement of data.
