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The 4-step machine cycle consists of Fetch, Decode, Execute, and Store.

  1. Fetch: The CPU retrieves an instruction from memory, using the program counter to determine the address.
  2. Decode: The fetched instruction is interpreted to understand what action is required, identifying the operation and the operands involved.
  3. Execute: The CPU performs the operation specified by the instruction, which may involve arithmetic calculations or data manipulation.
  4. Store: Finally, the result of the execution is written back to memory or a register, completing the cycle before moving on to the next instruction.
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3mo ago

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