Question:medium

The inputs and outputs for different time intervals are given below the NAND gate.
\[ \begin{array}{|c|c|c|c|} \hline \text{Time} & \text{Inputs A} & \text{Inputs B} & \text{Outputs Y} \\ \hline t_1 \text{ to } t_2 & 0 & 1 & P \\ t_2 \text{ to } t_3 & 0 & 0 & Q \\ t_3 \text{ to } t_4 & 1 & 0 & R \\ t_4 \text{ to } t_5 & 1 & 1 & S \\ \hline \end{array} \]
The values taken by \(P\), \(Q\), \(R\), and \(S\) are respectively:

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NAND gate truth: output is LOW (0) only when ALL inputs are HIGH (1). For any other input combination, output is HIGH (1).
Updated On: Apr 8, 2026
  • 1, 1, 1, 0
  • 0, 1, 0, 1
  • 0, 1, 1, 0
  • 1, 0, 1, 1
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The Correct Option is A

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