Computer Science · Oct / Nov 2016 · Paper 12 · Question 7
2210
As printed in the paper
Show the answer and mark scheme
7(a)(i)[3]
2 marks for 4 correct outputs, 1 mark for 2 correct outputs 1 mark for correct gate AND gate [3]
7(a)(ii)[3]
2 marks for 4 correct outputs 1 mark for 2 correct outputs 1 mark for correct gate OR gate [3]
A B Working space X 0 0 0 0 1 0 1 0 0 1 1 1 A B Working space X 0 0 0 0 1 1 1 0 1 1 1 1
7(b)(i)[4]
1 mark per correct section. [4]
7(b)(ii)[4]
4 marks for 8 correct outputs 3 marks for 6 correct outputs 2 marks for 4 correct outputs 1 mark for 2 correct outputs [4]
A B C Working space X 0 0 0 0 0 0 1 1 0 1 0 0 0 1 1 0 1 0 0 0 1 0 1 1 1 1 0 1 1 1 1 1 1 mark 1 mark 1 mark 1 mark
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