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The operation is specified by a binary code known as the -

  • A.Command code
  • B.Source code
  • C.Operand code
  • D.Opcode

Answer: D

The operation in an instruction is specified by the opcode.

The operation code says what to do - add, load, jump - and the rest of the instruction says what to do it to. The number of bits in the opcode limits how many distinct instructions the processor can have.

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