question_answer

The output Y of the logic circuit given below

A)  \[\overline{A}+5\]           

B) \[\overline{A}\]

C)  \[(\overline{\overline{A}+B)}.\overline{A}\]     

D)  \[(\overline{\overline{A}+B)}.A\]

Correct Answer: B

Solution :

[b]: The output Y of the logic circuit is \[Y=\overline{A}+\overline{A}.B=\overline{A}.(1+B)=\overline{A}.1=\overline{A}\]