Modern Physics 6 Question 13

14. To get output ’ 1 ’ at $R$, for the given logic gate circuit, the input values must be

(Main 2019, 10 Jan I)

(a) $X=0, Y=0$

(b) $X=1, Y=0$

(c) $X=1, Y=1$

(d) $X=0, Y=1$

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Solution:

  1. The given circuit can be drawn as shown in the figure given below

Truth table for this given logic gate is

Given
in the options
$\boldsymbol{A} _{\mathbf{1}}$ $\boldsymbol{A} _{\mathbf{2}}$ $\boldsymbol{A} _{\mathbf{3}}$ $\boldsymbol{A} _{\mathbf{4}}$ $\boldsymbol{R}$
$X$ $Y$
0 0 1 1 1 1 0
1 0 0 1 0 0 1
1 1 0 0 1 1 0
0 1 1 0 1 1 0

So to get output $R=1$, inputs must be $X=1$ and $Y=0$.



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