A microcomputer is a computer with microprocessor as it CPU, Memory that is Ram and Rom and I/O ports these parts are connected through system of wires of buses (Address Bus, Control Bus, Data Bus).

1) The instructions for a computer are store in successive memory location as binary location.

2) The CPU fetches in instruction from memory, decodes the instruction to determine what action must be taken and carries out detaction (execute it).

3) For fetching, first it CPU places address of the instruction on the address bus, control signals.


(Read in this case) on the control bus and finally read instruction through data bus.


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