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electronics and communication engineering digital electronics
1. In the figure, the LED
(A): does not Emit light, irrespective of the switched positions
(B): emits light when both S1 and S2 are closed
(C): emits light when both S1 and S2 are open
(D): emits light when only S1 and S2 is closed
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By: guest on 01 Jun 2017 11.53 pm
To emit the light, it is necessary NAND gate output is zero, for NAND O/P zero. Both the I/O must be height. And it is not possible in any case.
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