Complete the truth table for the NOR gate. A B Output (X) 0 0 0 1 1 0 1 1
- (a)Complete the truth table for the NOR gate. A B Output (X) 0 0 0 1 1 0 1 1[1]
- (b)Write a logic statement that corresponds with the following logic circuit. [Figure depicting logic circuit with inputs A, B, C and output X] X =[3]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (May/June 2017). The mark or mark type is shown in brackets.
- [1] 1 mark for four correct outputs only A B Output 0 0 1 0 1 0 1 0 0 1 1 0
- [3] 1 mark for each correct section of the statement ∞ (A AND B) ∞ AND ∞ (C OR NOT B)
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