A: There is no NOT gate NOT is a term used to signify that the function is negated like OR becomes NOT if the output is negated by an inversion of the final signal. The difference in gates OR and NOR...
A NAND gate produces as output the inversion of the AND operation on it's inputs. So, since an AND gate only has high output when all inputs are high, a NAND gate will only have low output when all...
its bcoz all other gates lik AND,OR,NOT,XOR...........etc.u can achieve the functionality of these gates with the help of NAND and NOR.u can replace all these gates in a circuit wit the help of NAND...