CAPE Physics Unit 2 · 2013 · Paper 1 · Question Q29

Two four-bit binary numbers are fed in series into the inputs, X and Y, on an AND gate. The numbers are represented by the pulse trains in the V-t diagrams shown below. Which of the following pulse trains represents the output pulse from the AND gate?

1. (A)[diagram option — open in Quelpr]
2. (B)[diagram option — open in Quelpr]
3. (C)[diagram option — open in Quelpr]
4. (D)[diagram option — open in Quelpr]

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