Question Video: Finding the Number of Outputs to a NOT Gate Physics

How many outputs does a NOT gate have?

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Video Transcript

How many outputs does a NOT gate have?

In order to answer this question about the number of outputs of a NOT gate, it will be useful to recall what it is that a NOT gate does. A NOT gate acts to negate the value that’s input to it. The symbol for a NOT gate is a triangle oriented so that one of its corners is pointing to the right, and on this rightward-pointing corner there’s a small circle.

Since the NOT gate simply negates the value that’s input to it, this means that a NOT gate must take a single input value, which it then negates to produce a single output value. Specifically, if this single input to the NOT gate has a value of zero, then the NOT gate produces a single output with a value of one. Meanwhile, if the input to the NOT gate is one, then the single output from the gate has a value of zero. Either way, because of how a NOT gate works, it’s always going to be a single input value going to a single output value.

So our answer is that a NOT gate has one output.

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