execution process

What Is The First Step In The Execution Cycle?

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What Is The First Step In The Execution Cycle? Four steps of the machine cycle Fetch – Retrieve an instruction from memory. Decode – Translate the retrieved instruction into a series of computer commands. Execute – Execute the computer commands. Store – Send and write the results back in memory. Where does the control starts

How An Instruction Is Fetched Decoded And Executed?

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How An Instruction Is Fetched Decoded And Executed? Fetches a program instruction from the main memory. Decodes the instruction, i.e. works out what needs to be done. Executes, i.e. carries out, the instruction. How does instruction fetch and execute? The CPU fetches the instructions one at a time from the main memory into the registers.