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प्रश्न
The following figure shows the input waveforms (A, B) and the output waveform (Y) of a gate. Identify the gate, write its truth table and draw its logic symbol.
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उत्तर
The truth table for the gate can be obtained from the waveforms (from t = 1) as
| A | B |
`Y=bar(AB)` |
| 0 | 0 | 1 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 0 |
Therefore, from the truth table, we can say that the gate is a NAND gate. The logic symbol for the NAND gate is
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