Answer / vinay

NAND Gate

The output is high when either of inputs A or B is high, or
if neither is high. In other words, it is normally high,
going low only if both A and B are high.


The NAND gate and the NOR gate can be said to be universal
gates since combinations of them can be used to accomplish
any of the basic operations and can thus produce an
inverter, an OR gate or an AND gate. The non-inverting gates
do not have this versatility since they can't produce an invert.

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