question_answer

Which logic gate is represented by the following combination of logic gates?

A)  OR                        

B)         NOR

C)  AND                                     

D)  NAND

Correct Answer: C

Solution :

Truth Table

A	B	A?	B?	A?+B?	Y=(A?+B?)
0	0	1	1	1	0
0	1	1	0	1	0
1	0	0	1	1	0
1	1	0	0	0	1

Output Y is high when both input A and B are high. Hence this is AND gate.