What is the correct sequence of processing instructions in a machine cycle?

In the context of computer architecture and the functioning of processors, the correct sequence of processing instructions is: Fetch, Decode, Execute, Store.

To start, the Fetch stage involves retrieving an instruction from memory using the program counter, which points to the location of the next instruction to be executed. This step is crucial as it brings the relevant instruction into the processor for processing.

Next, in the Decode phase, the fetched instruction is translated into a format that the processor can understand. During this stage, the control unit interprets the instruction's operation code (opcode) and prepares the necessary data paths and signals for executing the instruction.

After decoding the instruction, the Execute stage is where the actual operation (such as arithmetic calculations or logic operations) is performed. The processor carries out the command specified by the instruction at this stage, modifying data or producing output as necessary.

Finally, the Store phase involves writing the results of the executed instruction back into memory or a register. This ensures that any changes made during the execution are saved for future reference or further processing.

This structured sequence is fundamental for ensuring that processors carry out tasks efficiently and correctly, and it embodies the flow that a machine cycle follows in managing instruction execution.