Briefly explain the sub cycles involved in execution of a machine inst

Question

Briefly explain the sub cycles involved in execution of a machine instruction. Write notes on various registers in CPU.

24 Feb 2025

Answer :

Word Count : 456

In a computer, the execution of a machine instruction follows a structured cycle known as the Instruction Cycle, which consists of several sub-cycles. The main sub-cycles involved in executing a machine instruction are:

1. Fetch Cycle:
- The CPU retrieves the next instruction from the memory.
- The Program Counter (PC) holds the address of the instruction to be fetched.
- The instruction is then stored in the Instruction Register (IR).

2. Decode Cycle:
- The CPU decodes the fetched instruction to determine the operation and required operands.
- The Control Unit (CU) interprets ________ _______ _________ _____ ____ __________ _____ _________ ________.
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