Computer Science · Oct / Nov 2021 · Paper 11 · Question 10
0478
As printed in the paper
The question as text
Consider the following logic statement: X = (((A OR B) OR (NOT (B XOR C))) AND C)
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
10(a)[5]
One mark per each correct logic gate with the correct input(s).
10(b)[2]
One mark per logic gate name and one mark per correct drawing.
NANDNOR10(c)[4]
A
B
C
Working space
X 0
0
0
0 0
0
1
0 0
1
0
0 0
1
1
1 1
0
0
0 1
0
1
1 1
1
0
0 1
1
1
1 4 marks per 8 correct outputs
3 marks per 6/7 correct outputs
2 marks per 4/5 correct outputs
1 mark per 2/3 correct outputs
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