What are the four steps CPUs use to execute instructions?

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∻The Four Steps CPUs Use to Execute Instructions∻ ‖ ▪ ⋮ Fetch: The CPU retrieves an instruction from the program memory ⋮ This is the first step where the instruction is loaded from the RAM into the CPU's instruction register ‖ ‖ ▪ ⋮ Decode: The CPU's instruction decoder interprets the instruction ⋮ During this step, the instruction is translated into signals that can be understood by other parts of the CPU ‖ ‖ ▪ ⋮ Execute: The CPU performs the instruction's operations ⋮ Depending on the instruction, this could involve arithmetic calculations, moving data, or other operations ‖ ‖ ▪ ⋮ Writeback: The CPU writes the result to memory or a register ⋮ The final step involves saving the result of the instruction's execution to either a register within the CPU or back to the main memory ‖ ⚹ Each of these steps is critical in the overall process of instruction execution within a CPU, and they are collectively known as the fetch-decode-execute cycle or the instruction cycle ⚹

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