How to make a Not gate using Multiplexer?

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Not Gate

Hi

Is it possible to make a Not gate using 2x1 Multiplexer.
If yes, HOW? if no, Why?
 

Re: Not Gate

Here's another approach. It's called a Karnaugh Map, although it's not normally used for such an application.

AB / S
xx | 0 1
=====
00 | 0 0
01 | 0 1
11 | 1 1
10 | 1 0

You can easily see that if you use S as an input, and tie AB to 10, you get an invertor. There could be other combinations. It's really up to you to explore.
 

Not Gate

u can do it but generally it is never used to implement a 'not' gate because 'not' is one of the simplest gates and its not a wise move to use a multiplexer instead of a simple gate
 

Re: Not Gate

i guess this how its done.. the inputs to the mux is 1 and 0.. selection line is S which is 0 and 1..depenin on the selection line.. if the selection line is 1 -- output is zero.. and if the selection line is 0 the output is 1...

i hope am not confusin u.. and gettin confused myself..

with regards,
 

Re: Not Gate

ya.u can..but here efficiency would b less interms of gates......
 

Re: Not Gate

yes u can build... give the input as select signal and for input labelled as 0 give 1 and vice versa... then u will get not gate.........
 

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