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A single transistor can be used to build which of the following digital logic gates?

A single transistor can be used to build which of the following digital logic gates? Correct Answer NOT gates

A transistor can be used as a switch. That is when base is low collector is high (input zero, output one) and base is high collector is low (input 1, output 0).

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A single transistor can be used to build which of the following digital logic gate?
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