question_answer

Consider two transistors as shown in figure. If 0 `volts corresponds to false and 5Volts correspond to true then the output at corresponds to:           [JEE ONLINE 09-04-2013

A)             A NAND B

B) A OR B

C)             A AND B

D) A NOR B        

Correct Answer: A

Solution :

[a]

There are two individual NOT gates, and when they combine provide NAND gate.

So, A and B.