The CPU contains several components.
Name three components of the CPU.
Mark scheme
Award one mark for any of the following up to a maximum of three marks:
- Control unit / CU (1)
- Arithmetic logic unit / ALU (1)
- Register(s) (1)
- Clock (1)
Do not accept main memory / RAM.
Do not accept cache.
Marks can be awarded in any order.
Example answers and how they were marked
Full marks3/3
Control unit, arithmetic logic unit and registers.
Why: Names three creditworthy CPU components (control unit, ALU, registers), one mark each.
Some marks2/3
Control unit, clock and main memory.
Why: Control unit (1) and clock (1) are creditworthy; main memory is not a component of the CPU, a common misconception seen in the June 2023 question.
No marks0/3
Main memory, RAM and cache.
Why: None are CPU components named in the specification; candidates often confuse main memory with CPU components.