In a microprogrammed control unit, control signals are generated primarily by interpreting:

Options

  • A. Cache tags
  • B. Microinstructions stored in control memory
  • C. Only the contents of the program counter
  • D. More than one of the above
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

B. Microinstructions stored in control memory

Detailed Explanation

Correct Answer: Microinstructions stored in control memory.

Explanation: A microprogrammed control unit uses microinstructions stored in control memory. These microinstructions specify the control actions needed to carry out machine instructions. This approach can make control logic easier to modify, although it may introduce additional execution overhead.
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BPSC TRE 4 operating system practice set 3

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