Transistors can be PNP or NPN. PN or NP means simply PN junction diode which will act as NOT gate. Not because of the reason stated above to my knowledge.
(Mon, Sep 26, 2011 05:44:48 PM)
Because transistor act as a inverter.
Ashish Singhal said:
(Tue, Oct 18, 2011 06:45:57 PM)
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.
(Tue, Aug 21, 2012 12:06:27 AM)
But when gate supply zero how transistor output will be one?
(Mon, Mar 18, 2013 09:49:08 PM)
All the above answers not completely true. Answer is. 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).