I. Fetch the contents of the memory location pointed at by the computer system. The contents of this location are interpreted as an instruction to be executed. Therefore, they are holed up in the instruction register (IR). Symbolically, it can be written as:
2. supposing that the memory is byte addressable .it increment the contents of the PC by 4, that is
3. Perform the actions mention by the instruction stored in the IR
Most of the operation in step 1 to 3 denoted earlier can be carried out by performing one or more of the following function
However, in cases where an instruction takes place more than 1 word, steps 1 and 2 might be
repeated as several times as essential to fetch the complete instruction.
Fetch the contents of a specific memory location and load them into a CPU Register