Question

Which of the following correctly represents the AND logic gate?

• A. Output = 1 if at least one input is 1
• B. Output = 1 only if all inputs are 1
• C. Output = 0 if all inputs are 0
• D. Output = 1 if all inputs are 0

Hint:

AND gates are used in digital circuits where all conditions must be true for the output to be true.

Answer 1

The Correct Option is B

The AND gate performs a logical multiplication. 
The output \( Y \) of an AND gate is: \[ Y = A \cdot B, \] 
where \( A \) and \( B \) are the inputs. 

Truth table: \[ \begin{array}{|c|c|c|} \hline A & B & Y \\ \hline 0 & 0 & 0 \\ 0 & 1 & 0 \\ 1 & 0 & 0 \\ 1 & 1 & 1 \\ \hline \end{array} \]