Paper 1 · ICT
The ALU of a computer responds to the commands coming from the
APrimary memory
BControl section ✓ Correct
CExternal memory
DCache memory
Correct answer: (B) Control section — The ALU responds to commands from the control section, so that is the answer.
Explanation
★The ALU responds to commands from the control section, so that is the answer.
★The control section directs the work of the whole CPU.
★It tells the ALU which operation to perform and when.
★So the ALU acts on commands from the control section.
★Primary, external and cache memory only supply data, not the commands.
★So the answer is the control section.
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