May/June 2026 Paper 11

2026 · 7 questions · 29 parts · 75 marks

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6(a)Logic Gates Truth TablesHard2 marks
Write the logic expressions for the following logic circuit.
logic circuit with inputs B, C, D and E and outputs Y and Z. B and the output of a NOT gate on C feed a 2-input OR gate; the OR gate's output feeds a NOT gate to give Y. The same NOT-C signal and D feed a 2-input XOR gate; the XOR gate's output and E feed a 2-input NOR gate to give Z.
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6(b)Logic Gates Truth TablesEasy2 marks
Create and complete the truth table for a two-input NAND gate.
Input 1Input 2NAND
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