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Computer Science · May / June 2026 · Paper 12 · Question 2

0478

As printed in the paper

The question as text

A computer has a central processing unit (CPU).

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  • 2(a)[1]

    One from:

    To process/execute data/instructions
    To perform/carry out/run/process the fetch – decode – execute/FDE/FE cycle

  • 2(b)[2]

    Two from:

    Program counter // PC
    Current instruction register // CIR // instruction register // IR
    Accumulator // ACC

  • 2(c)[3]

    Three from:

    The MAR stores/holds/contains the

    address/location/pointer // address is sent/copied to MAR …

    … for the value/data that is to be fetched/in RAM
    The MDR stores/holds/contains the value/data // data is sent/copied to the MDR

  • 2(d)[2]

    Two from:

    3 billion
    … is the (maximum) number of instructions / FDE cycles / FE cycles / clock cycles processed per second
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