Discussion
What is the order decided by a processor or the CPU of a controller to execute an instruction ?
Answer: D
The order is fetch, decode, execute.
A processor first fetches the instruction from memory at the address held in the program counter, then decodes it to determine the operation and operands, and only then executes it. The cycle then repeats for the next instruction.
An instruction cannot be decoded before it has been fetched, nor executed before it has been decoded, so every other ordering among the options is impossible.
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