CU: GCSE Computer Science Definition

What is the CU?

In GCSE Computer Science, the CU (Control Unit) is defined as a component of the CPU, responsible for coordinating how data moves by sending signals to control the flow of the data.

The CU plays a crucial role in the decode stage of the fetch-decode-execute cycle, responsible for decoding the instructions fetched from memory.

CU Revision Resources to Ace Your Exams

Explore the CU in more detail and master other key related terms such as the arithmetic logic unit (ALU) and cache in our revision note pages here:

CPU components & their function (OCR GCSE Computer Science)
CPU components & their function (AQA GCSE Computer Science)
CPU components & their function (Edexcel GCSE Computer Science)

Challenge yourself with our expertly created topic questions and reinforce your learning with our interactive flashcards. 

GCSE Computer Science Revision Resources