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Microprocessor Fundamentals

Q1: When referring to instruction words, a mnemonic is:

A a short abbreviation for the operand address

B a short abbreviation for the operation to be performed

C a short abbreviation for the data word stored at the operand address

D shorthand for machine language

ANS:B - a short abbreviation for the operation to be performed

We know that instruction register reffered as IR. Only OPCODE (operation code) goes in IR not operand (data) and IR does not accessible by user. That is why (B) sort abbreviation for operation to be performed answer is right answer.



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