May/June 2026 Paper 12

2026 · 8 questions · 28 parts · 75 marks

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1(a)1(b)1(c)1(d)(i)1(d)(ii)

–/8 mks

2(a)2(b)2(c)(i)2(c)(ii)

–/13 mks

3(a)3(b)(i)3(b)(ii)3(c)

–/16 mks

–/4 mks

–/7 mks

6(a)6(b)6(c)6(d)

–/11 mks

7(a)(i)7(a)(ii)7(a)(iii)7(b)(i)7(b)(ii)

–/13 mks

–/3 mks

8(a)Logic Gates Truth TablesHard2 marks

Complete the truth table for the given logic circuit.

the logic circuit for question 8: inputs X, Y and Z enter a box containing a NOT gate on X, a 2-input XOR gate on X and Y, a 2-input NOR gate, and two 2-input AND gates. X feeds both the NOT gate and the XOR gate; Y feeds only the XOR gate; Z feeds only the first AND gate. The NOT gate's output (NOT X) is the NOR gate's top input. The XOR gate's output (X XOR Y) branches three ways: to the NOR gate's bottom input, to the first AND gate's top input (with Z as the first AND gate's bottom input), and to the second AND gate's top input. The first AND gate's output feeds the second AND gate's bottom input. The NOR gate's output is labelled A and the second AND gate's output is labelled B

X	Y	Z	A	B
0	0	0	Table answer row1_A	Table answer row1_B
0	0	1	Table answer row2_A	Table answer row2_B
0	1	0	Table answer row3_A	Table answer row3_B
0	1	1	Table answer row4_A	Table answer row4_B
1	0	0	Table answer row5_A	Table answer row5_B
1	0	1	Table answer row6_A	Table answer row6_B
1	1	0	Table answer row7_A	Table answer row7_B
1	1	1	Table answer row8_A	Table answer row8_B

8(b)Logic Gates Truth TablesMedium1 mark

Write the logic statement for the given truth table.

A	B	C	P
0	0	0	1
0	0	1	1
0	1	0	0
0	1	1	0
1	0	0	0
1	0	1	0
1	1	0	1
1	1	1	1