Question 165 of 209

The output waveform of the given logical circuit for the following inputs $A$ and $B$ as shown below, is

ABCD

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Answer: (D)

In the given logical circuit, all logic gates are NAND gate.

Here, the inputs $A$ and $B$ are inverted using NOT gate (made using NAND gate), then $\bar{A}$ and $\bar{B}$ are applied as inputs in other NAND gate.
So, $\left(A.A\right)=A$ and $B.B=B$
Output at $Y$ is $\left(A.B\right)=A+B$.
The above boolean expression is for OR gate.
Truth table of OR gate is $A$ $B$ $Y$ $0$ $0$ $0$ $0$ $1$ $1$ $1$ $0$ $1$ $1$ $1$ $1$ The output waveform is shown below.

JEE Main Physics practice question on Semiconductors (Logic gates), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.