question_answer

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

A)  OR          

B)  NAND

C)  AND         

D)  NOR

Correct Answer: C

Solution :

Output, \[Y=\overline{\overline{A}+B}\]                 \[Y=\overline{\overline{A}+B}\] \[=\overline{\overline{A}+\overline{B}}=AB\] This is the output equation of AND gate. ?