Question

The output of NOT gate when its input is $0$:

• A. is $1$
• B. is $0$
• C. can be $0$ or $1$
• D. is $0$ and $1$

Answer 1

The correct option is A is $1$

Truth table of a NOT gate is:

	Input	Output
X	0	1
Y	1	0

We can clearly see that when the input of a NOT gate is $0$, the output is $1$.