What Are The Possible States That Define The Instruction Execution? Instruction address calculation (iac): Determine the address of the next instruction to be executed. Instruction fetch (if): Read instruction from its memory location into the processor. Instruction operation decoding (iod): Analyze instruction to determine type of operation to be performed and operand(s) to be used.
What Is Meant By Execution Cycle? The fundamental sequence of steps that a CPU performs. Also known as the “fetch-execute cycle,” it is the process whereby a single instruction is executed. The first half of the cycle transfers the instruction from RAM to the instruction register (fetch) and decodes it. What are the steps of
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? 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.