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Q

Medium 2 Marks

Computer Studies Central Processing Unit (CPU)

What may the Execute stage involve?

A Only fetching the next instruction from memory

B Only decoding the instruction in the IR

C Performing ALU calculations moving data between registers and memory or interacting with I/O devices

D Only storing results permanently to secondary storage

Explanation

The Execute stage may involve: performing calculations in the ALU moving data between registers and memory or interacting with input/output devices depending on the instruction.

Reference: Computer Studies Textbook , Page 5

Hint

Different instructions need different actions — what are the possible execute actions?

Explanation

Hint

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