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Computer Science · Oct / Nov 2022 · Paper 11 · Question 5

0478

As printed in the paper

The question as text

Consider the logic statement: X = ((((B OR C) AND NOT C) NAND B) OR NOT A)

Read automatically from the paper; the printed page above is exact.

Show the answer and mark scheme

  • 5(a)[6]

    One mark for each correct logic gate with correct input(s)

  • 5(b)[1]

    Any one from:

    NOR
    XOR // EOR

  • 5(c)[4]

    Four marks for 8 correct outputs

    Three marks for 6/7 correct outputs

    Two marks for 4/5 correct outputs

    One mark for 2/3 correct outputs

    A

    B

    C

    Working space

    X

    0

    0

    0

    1

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    1

    1

    0

    1

    0

    1

    0

    1

    1

    1

    1

    0

    0

    1

    1

    0

    1

    1

    1

    1

    0

    0

    1

    1

    1

    1

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