1.

What is instruction execution ?

Answer»

The microprocessor performs operations by accepting instructions from the user. Every program consists of a sequence of instructions. The commands of n instruction set are called ‘mnemonics’. A command is understood by the CPU only when it is converted into equivalent single byte hexadecimal opcodes with or without one-byte or two byte data or address. 

An instruction consists of:- 

1. Opcode (operational code) 

2. Operand(Operational End)



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