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  4. If a, b, c, d are inputs to a gate and x is its output, then, as per the following time graph, the gate is :

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Q. If $a, b, c, d$ are inputs to a gate and $x$ is its output, then, as per the following time graph, the gate is :Physics Question Image

JEE MainJEE Main 2016Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

$x$ is $1$ when at least one of the inputs is $1$. Hence $x$ is an $OR$-Gate