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Explain the significance of different fields of an instruction
An instruction is a command given to a computer to perform a particular operation on some given data and the format in which the instruction is specified is called as Instruction format. The most common fields found in the instruction are:-
(i) An operation code field that specifies the operation to be executed. It is called as opcode field.
(ii) An address field that designates the registers address and/or a memory addresses.
(iii) A mode field that specifies the way the operands or the efficient address is determined.
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