Multiple choice general knowledge science & technology

The ALU of a computer responds to the commands coming from

  1. Primary memory

  2. Control section

  3. External memory

  4. Cache memory
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B Correct answer
Explanation

The ALU (Arithmetic Logic Unit) executes instructions under the direction of the Control Unit/Control section, which decodes instructions and tells the ALU what operations to perform. Primary memory stores data and instructions, cache memory speeds up access, and external memory is for long-term storage - none of these directly command the ALU.

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