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Machine cycle

Machine cycle. What is the machine cycle?. 4 steps that processors follow to execute program instructions. Step 1. The control unit fetches the instruction from the memory. Step 2. The control unit decodes the instruction and directs the necessary data to the ALU.

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Machine cycle

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  1. Machine cycle

  2. What is the machine cycle? • 4 steps that processors follow to execute program instructions.

  3. Step 1 The control unit fetches the instruction from the memory

  4. Step 2 The control unit decodes the instruction and directs the necessary data to the ALU

  5. Steps 1 and 2 are called: instruction time or I-time

  6. Step 3 The ALU executes the arithmetic or logical instruction.

  7. Step 4 The ALU stores the result of this operation in memory or in a register

  8. Steps 3 and 4 are called: execution time or E-time

  9. The combination of I-time and E-time is called: themachine cycle.

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