question_answer

When the inputs of a two input logic gate are 0 and 0, the output is 1. When the inputs are 1 and 0 the output is 0. The logic gate is of the type:

A)  AND                     

B)         NAND

C)  NOR                     

D)         OR

E)  XOR

Correct Answer: C

Solution :

NOR gate is obtained when the output of OR gate is made as the input of NOT gate. Boolean expression for NOR gate is \[Y=\overline{A+B}\]  Truth Table

A	B	Y
0	0	1
1	0	0
0	1	0
1	1	0