The following figure shows a logic gate circuit with two inputs $A$ and $B$ and the output $Y.$ The voltage waveforms of $A, B$ and $Y$ are as given. The logic gate is

Explain logic gates.

Which of the following logic gates will have an output of $1$?

In the circuit,the logical value of $A = 1$ or $B = 1$ when the potential at $A$ or $B$ is $5 \, V$,and the logical value of $A = 0$ or $B = 0$ when the potential at $A$ or $B$ is $0 \, V$. The truth table of the given circuit will be:

The following diagram performs the logic function of:

Which logic gate is represented by the following symbol?