Multiple choice Which of the following digital logic gates is build by using single transistor? FOR OR NOT AND NAND Reveal answer Fill a bubble to check yourself C Correct answer Explanation NOT Gate is like an inverter it is because when we gives one to the input of not gate we get zero i.e, inverts of the input. Transistor is acts as a switch means it is used for ON and OFF. This is can be done by using NOT gate.