Five components of a CPU are listed below:
For each row in Table 1, choose the letter (A, B, C, D, or E) that best matches the description. Letters should not be used more than once.
| Description | Letter (A-E) |
|---|---|
| Holds the memory address of the next instruction to be fetched. | |
| Decodes instructions and sends control signals to coordinate other CPU components. | |
| A register that temporarily stores the immediate results of calculations. |
Practise AQA GCSE Computer Science Systems architecture with exam-style questions for GCSE Computer Science. 42 questions, matched to the AQA GCSE Computer Science (8525) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.