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5 marksLogic Gates

CAPE Physics Unit 2 · May/June 2024 · Paper 2 · Question 2(c)

Figure 3 is a timing diagram which shows the input waveforms to the circuit in Figure 2.

Use your truth table in (b) to determine and sketch the resulting output waveform on the grid provided in Figure 3. On your sketch, include the binary equivalent of the output waveform.

This question uses a figure or table from the paper — you'll see it when you practise.

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Other parts of this question

  1. 2(a)(i)Draw the symbol and the truth table for the two-input NAND logic gate.[3 marks]
  2. 2(a)(ii)Draw the symbol and the truth table for the two-input OR logic gate.[3 marks]
  3. 2(a)(iii)Draw the symbol and the truth table for the two-input EXNOR logic gate.[4 marks]
  4. 2(b)Complete Table 1 by deducing the corresponding values of C', D, E and F.[8 marks]
  5. 2(d)Draw a circuit containing NAND gates only equivalent to that shown in Figure 2.[7 marks]

More practice: the rest of this paper · more Logic Gates questions · all CAPE Physics Unit 2 past papers