Computer Science · May / June 2024 · Paper 21 · Question 8
0478
As printed in the paper
The question as text
Consider the logic expression: Z = (R OR NOT T) XOR (NOT S AND T)
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
8(a)[5]
One mark for each correct gate, with the correct input(s) as shown.
R
S Z
T
8(b)[4]
Four marks for eight correct outputs.
Three marks for six or seven correct outputs.
Two marks for four or five correct outputs.
One mark for two or three correct outputs
R
S
T
Z
0
0
0
1
0
0
1
1
0
1
0
1
0
1
1
0
1
0
0
1
1
0
1
0
1
1
0
1
1
1
1
1
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