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Machines and computational modelling

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Question 2

Computers use the Fetch-Decode-Execute cycle to process instructions.

Complete the table by writing the numbers 1 to 4 in the 'Sequence number' column to put the stages of the cycle in the correct chronological order (where 1 is the first stage and 4 is the last stage).

StageSequence number
The Control Unit (CU) decodes the instruction
The instruction is fetched from memory using the address bus
The Program Counter (PC) holds the address of the next instruction to be fetched
The instruction is executed, such as performing a calculation in the ALU
[4]

Machines and computational modelling Questions

  1. IGCSE
  2. /Computer Science
  3. /Machines and computational modelling