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Semiconductor Electronics question

2004 · Q138
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Semiconductor Electronics question

2004 · Q138

NEETPhysicsSemiconductor ElectronicsMCQ+4 / −1
The output of OR gate is 1
  1. A
    if both inputs are zero
  2. B
    if either or both inputs are 1
  3. C
    only if both inputs are 1
  4. D
    if either inputs is zero
View written solutionFree

Correct answer: B

The truth table of OR gate is

$$\begin{matrix} A & B & Y \ 0 & 0 & 0 \ 0 & 1 & 1 \ 1 & 0 & 1 \ 1 & 1 & 1 \

\end{matrix} $$

It is seen that output of OR gate is Y = A + B.
If both or any one has 1 input then output will be 1.

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