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2 marksLogic Gates

CAPE Physics Unit 2 · 2003 · Paper 1 · Question 6(a)(i)

Write the truth table for a half-adder used to add the 1's column in binary addition.

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Other parts of this question

  1. 6(a)(ii)Draw a circuit diagram to show how an Exclusive-OR (EX-OR) gate and an AND gate can be arranged to design a half adder circuit.[2 marks]
  2. 6(b)Draw a circuit diagram to show how NAND gates could be used to build a flip-flop.[1 mark]
  3. 6(c)Write the truth table for the circuit shown in Figure 6, indicating the output at X, Y and Z.[3 marks]
  4. 6(d)Draw a simple logic circuit to represent the truth table shown in which A and B are inputs and X is the output.[2 marks]

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