Computer Science · Oct / Nov 2023 · Paper 21 · Question 7
0478
As printed in the paper
The question as text
Consider this logic circuit. A B X C
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
7(a)[4]
One mark for each point
NOT AAND BOR NOT Cexpression correct (NOT A AND B) OR NOT C7(b)[4]
A
B
C
X
0
0
0
1
0
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1
0
0
1
0
1
0
1
1
1
1
0
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1
1
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1
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1
0
1
1
1
1
0
4 marks for 8 correct outputs
3 marks for 6/7 correct outputs
2 marks for 4/5 correct outputs
1 mark for 2/3 correct outputs
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