Input waveforms A and B as shown in Fig-I are applied to the combination of gates as shown in Fig-II. Which of the waveforms shown in Fig. (i) to (iv) correctly represents the output waveform ?
Answer & explanation
Correct answer: option 3
$Y=\bar A+\bar B$
So, output is 'zero' when both inputs are 'one'. In all other cases output is one.