Question

The following figure shows a logic gate circuit with two inputs $A$ and $B$ and output $C$. The voltage waveform of $A$, $B$ and $C$ are as shown in second figure below.
The logic circuit gate is:

• A. $OR$ gate
• B. $AND$ gate
• C. $NAND$ gate
• D. $NOR$ gate

Answer 1

The correct option is B $AND$ gate

The truth table for $AND$ gate is as follows :
A B C

0	0	0
0	1	0
1	1	1
1	0	0

We are getting the similar result from the given waveforms too. This implies that the gate is $AND$.