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Question: Answered & Verified by Expert
A logic circuit provides the output $Y$ as per the following truth table :
\begin{array}{|l|l|l|}\hlineA & B & Y \\\hline 0 & 0 & 1 \\0 & 1 & 0 \\1 & 0 & 1 \\1 & 1 & 0 \\\hline\end{array}

The expression for the output $Y$ is :
PhysicsSemiconductorsNEETNEET 2024
Options:
  • A $A \cdot \bar{B}+\bar{A}$
  • B $\bar{B}$
  • C $B$
  • D $A \cdot B+\bar{A}$
Solution:
1997 Upvotes Verified Answer
The correct answer is: $\bar{B}$
\begin{array}{|l|l|l|}\hlineA & B & Y \\\hline 0 & 0 & 1 \\0 & 1 & 0 \\1 & 0 & 1 \\1 & 1 & 0 \\\hline\end{array}

According to given truth table, output is independent on value of $A$
$\therefore$ Output $Y=\bar{B}$

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