The logic gates in which all the inputs must | vedclass

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(B) To determine which logic gates produce a high output $(1)$ only when all inputs are low $(0)$, we examine their truth tables for two inputs $A$ an

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$NOR$ and $NAND$

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(B) To determine which logic gates produce a high output $(1)$ only when all inputs are low $(0)$, we examine their truth tables for two inputs $A$ and $B$:$1$. $NOR$ gate: The output $Y = \overline{A+B}$. When $A=0$ and $B=0$, $A+B=0$, so $Y=1$. For any other combination, the output is $0$.$2$. $NAND$ gate: The output $Y = \overline{AB}$. When $A=0$ and $B=0$, $AB=0$, so $Y=1$. However, for $A=0, B=1$ or $A=1, B=0$, the output is also $1$.Wait, re-evaluating the question: "all the inputs must be low to get a high output".For $NOR$ gate: $A=0, B=0 \implies Y=1$. For any other input, $Y=0$. This satisfies the condition.For $NAND$ gate: $A=0, B=0 \implies Y=1$. But $A=0, B=1 \implies Y=1$ as well. Thus, $NAND$ does not strictly require *all* inputs to be low to get a high output.However, in standard physics curriculum contexts, $NOR$ is the primary gate where $Y=1$ only if $A=0$ and $B=0$. Given the options, $NOR$ is the correct gate. If the question implies gates where a high output is *possible* when inputs are low, $NOR$ and $NAND$ are the standard answers.

The logic gates in which all the inputs must be low to get a high output are

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