The figure shows a system of logic gates. Fro | vedclass

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(C) The logic circuit consists of an $OR$ gate, a $NAND$ gate, and a $NOR$ gate. Let the inputs be $X$ and $Y$. The intermediate outputs are $P = \ove

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$X = 1, Y = 0$

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(C) The logic circuit consists of an $OR$ gate, a $NAND$ gate, and a $NOR$ gate. Let the inputs be $X$ and $Y$. The intermediate outputs are $P = \overline{X} + Y$ and $Q = \overline{X \cdot \overline{Y}}$. The final output is $R = \overline{P + Q}$.$X$$Y$$\overline{X}$$\overline{Y}$$P = \overline{X} + Y$$Q = \overline{X \cdot \overline{Y}}$$R = \overline{P + Q}$$0$$0$$1$$1$$1$$1$$0$$0$$1$$1$$0$$1$$1$$0$$1$$0$$0$$1$$0$$0$$1$$1$$1$$0$$0$$1$$1$$0$From the truth table, the output $R$ is $1$ only when $X = 1$ and $Y = 0$.

The figure shows a system of logic gates. From the study of the truth table, it can be found that to produce a high output $(1)$ at $R$, we must have

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