Ace the A Level Computer Science OCR 2025 – Code Your Way to Success!

Image Description

Question: 1 / 400

What constitutes the Central Processing Unit (CPU) of a computer?

The RAM and external storage

The registers, ALU, and control unit

The correct answer highlights that the Central Processing Unit (CPU) comprises the registers, Arithmetic Logic Unit (ALU), and control unit.

The registers are small, fast storage locations within the CPU that temporarily hold data and instructions that the CPU is currently processing. This allows for rapid access and manipulation of data during computation. The ALU is a critical component responsible for performing arithmetic and logical operations, enabling the CPU to execute mathematical calculations and make decisions based on logical conditions. The control unit coordinates the activities of the CPU and manages the flow of data within the system by directing the operation of the processor and communicating with other components.

Understanding these components is essential, as they work together to ensure the CPU functions effectively, allowing it to process instructions and execute programs efficiently.

Get further explanation with Examzify DeepDiveBeta

The graphics processing unit and sound card

The motherboard and power supply

Next Question

Report this question

Download A Level Computer Science OCR Practice Exam PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy