I’m taking for an example kmaps for 3 var
(probably here we are taking CAB’ = 6
and below like AB’C =5 )
But how do i know which one to use and when?
All the above 3 maps are correct, just keep in mind what is the LSB and MSB
as it is F(A,B,C) maps has been drawn as A being MSB and C being LSB
So if i’m asked to insert values of B at the input lines , i’ll take AC as select variables and B as data variable, that is taking the KMAP as :-
as i said you may take anything as per your convenience
but if you want to implement it as a multiplexer then easy method will be using truth tables
The reduced truth table will be
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