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Explain the instruction cycle in depth

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Instruction cycle refers to the time and steps involved in execution of an instruction by the processor.
This occur as below;
(1) Fetching instruction
The instruction code is read from the computer and temporarily placed and encoded in the instruction register.

(2) Decode instructoin
The decoded instruction is then interpreted at this stage. The function in the instruction is understood and the address of respective operands are read in the main memory.

(3) Fetch operands
Operands, which are the data to be processed, are fetched from the main memory and placed in data registers.

(4) Execution
The function in the instruction is performed. The control unit initiates operations on data decoded in the data registers with respect to the type of instructoin, that is, whether arithmetic or logic.

(5) Storage of result
The result achieved by these operations may be stored in the memory address. A write cycle is initiated to transfer the result toits destination. The processor at this point can start over the next new instruction without being interferred by the write operation.

Andreaz answered the question on November 24, 2017 at 10:31

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