Question

Fetch - Decode - Execute cycle of CPU is called?

• A. Instruction Cycle
• B. Data Pipelining Cycle
• C. Memory Allocation Cycle
• D. Interrupt Handling Cycle

Hint:

Remember F-D-E: Fetch → Decode → Execute. This sequence is the fundamental Instruction Cycle of every CPU.

Answer 1

The Correct Option is A

Concept: Every instruction executed by a CPU passes through three major stages:

• Fetch

• Decode

• Execute
Together these stages form the

Instruction Cycle.

Step 1: Fetch Stage.
The CPU fetches the next instruction from memory using the Program Counter (PC).

Step 2: Decode Stage.
The Control Unit interprets the instruction and determines the required operation.

Step 3: Execute Stage.
The ALU or other execution units perform the specified task.

Step 4: Name of the complete cycle.
The sequence \[ \text{Fetch} \rightarrow \text{Decode} \rightarrow \text{Execute} \] is known as the \[ \boxed{\text{Instruction Cycle}} \]