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Hello everyone, in this lesson we will talk about the NOT gate in the gate circuit

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NOT gate is also called inverter

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Its circuit diagram symbol is shown in the figure

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It has only one input and one output

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Its operation logic is shown in the figure below

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When the A switch is closed, it is equivalent to short-circuiting the small light bulb,

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and the small light bulb is extinguished

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When the A switch is disconnected, the small light bulb can glow normally

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So its operation logic is, when the input is high level, it outputs low level

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When the input is low, the output is high

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When we remember, we can also record it as non-inverted