38. When an input electrical signal A=10100 is applied to a NOT gate, its output signal is A. 1011 B. 10001 C. 10101 D. 101 E. None of the above
It is NOT gate so always it converts the data apposite to it. So 0 becomes 1 and 1 becomes 0. NOT gate yields the reverse of the input signal in output, thus when an input signal 1 is applied to a NOT gate, its output is 0.