Question regaring karnaugh map...

Thread Starter

karnough

Joined Aug 4, 2009
2
Hi,

Let's assume we have a 4x4 karnaugh map and all of the cells are marked with don't care sign.
Is this map equails to "1" or to "0"?
Can I choose all the don't care cells to be as "1" and then circle them all?

10x.
 

count_volta

Joined Feb 4, 2009
435
Why would an entire map be don't cares? What possible use could that have? It can be EITHER 1 or 0 whichever you want.

But it would be silly. The function would be like, f(A,B,C,D) = 0 or f(A,B,C,D) = 1. What is the use of such a function for anything?
 

bearing01

Joined Jul 29, 2009
14
If you got a k-map with all don't cares that means you don't have any logic or decision table to reduce. You get a 1 output with any input.
 
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