# Boolean function question

1. Mar 6, 2015

### kukumaluboy

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

What i did was i drew the kmap and used minterms 0,2,8,11 and dontcares 3 and 10.
So is the complement of it 1, 4, 5, 6, 7, 9, 12 13, 14, 15 ?
So issit non of the above?

2. Mar 6, 2015

### Staff: Mentor

Have you looked at it using DeMorgans rules?

Can you provide more context? like where did the problem come from?

What is the meaning m(..) and d(...) and M(...) functions?

3. Mar 6, 2015

### kukumaluboy

Wait is it correct to do this.

1) Draw Kmap with dont cares
2) Obtain SOP
3) Negate SOP

Method 2
1)Change all the 1s to zeroes and zeroes to 1s. Keep the Dont cares the same
2)Draw Kmap
3)Obtain SOP

Are these 2 methods the same?

4. Mar 6, 2015

### Staff: Mentor

I haven't studied them in a long time and will defer to another mentor.

I did find this article on K-maps on wikipedia that may provide some guidance for now.

http://en.wikipedia.org/wiki/Karnaugh_map

Its got some cool pics with a K-map on a torus like "Have a donut while you're thinking like Spock".