What is the fetch-execute cycle?

The fetch-execute cycle is a fundamental process that underpins how a CPU operates and runs instructions. This cycle involves several distinct stages:

1. Fetch: The CPU retrieves an instruction from memory, typically from a location specified by the program counter. The instruction is then loaded into the instruction register.

2. Decode: The CPU decodes the fetched instruction to understand what actions need to be performed. This often involves determining the operation to be executed and identifying any operands involved.

3. Execute: In this stage, the CPU performs the operation specified by the instruction. It could involve arithmetic computations, moving data, or interacting with input or output devices.

4. Store: After execution, the results are written back to memory or an output device if necessary.

This cycle repeats continuously as the CPU processes a sequence of instructions, enabling the execution of programs. It is crucial for the functioning of almost all computational tasks, as every operation carried out by the CPU is directly linked to this cycle.

The other options pertain to activities not specifically related to the fundamental processing model of a CPU. For instance, methods for power generation, software loading, or memory management are functions carried out by the system, but they