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Fetch - Decode - Execute
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Fetch - Decode - Execute
The processor checks the program counter to see which instruction to run next
- The program counter gives an address value in the memory of where the next instruction is.
- The processor fetches the instruction value from this memory location.
- Once the instruction has been fetched, it needs to be decoded and executed. For example, this could involve taking one value, putting it into the ALU, then taking a different value from a register and adding the two together.
- Once this is complete, the processor goes back to the program counter to find the next instruction
- This cycle is repeated until the program ends
- Once this is complete, the processor goes back to the program counter to find the next instruction
- Once the instruction has been fetched, it needs to be decoded and executed. For example, this could involve taking one value, putting it into the ALU, then taking a different value from a register and adding the two together.
- The processor fetches the instruction value from this memory location.
- The program counter gives an address value in the memory of where the next instruction is.
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- Mind Map on Fetch - Decode - Execute, created by Jamie Sparks on 01/12/2018.
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- Jamie Sparks
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