implementing functions with multiplexers

Thread Starter

Xufyan

Joined Aug 3, 2010
114
Please look at the image below,
is it the correct way to implement an equation ??
i have just implemented the required numbers, (1,2,6,7) and ignored Do , D3, D4, D5, is it the correct way ?

Truth table and equation is also attached




The second question is,

i have implemented the same equation in more easiest way but i don't know how to draw its internal circuit because 3 selection lines are now reduced to just two, so where to connect the third selection line (z) ??

look at this ??



when designing this circuit what should be the input to each AND gate ??
 

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