The real time variation of input signals A and B are as shown below. If the inputs are fed into NAND gate, then select the output signal from the following.
Answer & explanation
Correct answer: option 2
From input signals, we have
| A | B | Output NAND gate |
| 0 | 0 | 1 |
| 1 | 0 | 1 |
| 0 | 0 | 1 |
| 1 | 1 | 0 |
| 0 | 0 | 1 |
The output signal is shown at B.