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4 marksLogic Gates

CAPE Physics Unit 2 · 2014 · Paper 2 · Question 5(a)

Logic gates and universal gate constructions.

Draw truth tables and the circuit symbols for the 2-input NAND gate and the XNOR gate.

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Other parts of this question

  1. 5(b)(i)Draw the NOR equivalent of the AND gate.[2 marks]
  2. 5(b)(ii)Draw the NOR equivalent of the OR gate.[1 mark]
  3. 5(b)(iii)Draw the NOR equivalent of the NAND gate.[1 mark]
  4. 5(c)(i)Show, by using a truth table, that the circuit in Figure 3 produces the Exclusive NOR operation.[3 marks]
  5. 5(c)(ii)Hence, develop a circuit using NOR gates only which will provide Exclusive NOR operation.[4 marks]

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