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The ALU of a computer responds to the commands coming from

  • A.Primary memory
  • B.Control section
  • C.External memory
  • D.Cache memory

Answer: B

Correct answer: Control section

The control unit fetches and decodes each instruction and then tells the ALU what operation to perform on which operands. The ALU has no decision-making of its own - it responds to the control signals. The two together make the CPU.

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