Logic Gates - Technical MCQs

Q1:

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

A AND gates

B OR gates

C NOT gates

D NAND gates

ANS:C - NOT gates

Transistor is generally used for current amplification. Whenever, the transistor input is high(1) it produces output as low (0) and vice versa. Therefore the single transistor is enough to built NOT gate.