# Review: Boolean Algebra, K-Maps, POS/SOP, Gate Conversion

Discussion in 'Homework Help' started by cwarren13, Jun 23, 2008.

1. ### cwarren13 Thread Starter New Member

Jun 23, 2008
4
0
Hey all,

I have a test coming up and I was wondering if anyone knows where I can find some good review questions/answers for studying. The subjects include:

Simplification using Boolean Algebra
K-Maps (2, 3 and 4 variables)
Product of Sum and Sum of Product forms (conversion to and from)
Gate Conversion
Creating a specific circuit using only X type of gates

I have a fairly good understanding of the material, but my book is horrible regarding examples. I like to practice a lot with material like this, hammer it into my brain. Any help would be very much appreciated.

Thank you!

2. ### hgmjr Moderator

Jan 28, 2005
9,030
214
Take a look at this material in the AAC ebook at this link.

hgmjr

3. ### cwarren13 Thread Starter New Member

Jun 23, 2008
4
0
I've actually read all of that before posting here. It was extremely helpful, but I just need some practice implementing what I've learned reading there.

edit - I suppose I should have clarified that I went through that (and did the examples) before I posted here. So much better than my text, but I just want more practice so I have a more solid understanding of the material.

4. ### hgmjr Moderator

Jan 28, 2005
9,030
214
Take a look here.

Scroll down to the section with worksheets for the AAC ebook section for the digital section.

hgmjr

5. ### cwarren13 Thread Starter New Member

Jun 23, 2008
4
0
Amazing, that's certainly a lot to review. Thank you very much!

6. ### cwarren13 Thread Starter New Member

Jun 23, 2008
4
0
So I'm trying to get the hang of Minterms and Product of Sums form using the K-map.

Heres the original expression:

(AB+C)(B+C'D)

Heres what I did to it:

(AB + ABC'D + BC + CC'D)

(AB + ABC'D + BC + 0)

(AB + BC)

Now I put that in the k-map as (4, 7, 8). Placing 0's in the rest of the slots I get (1, 2, 3, 5, 6). The group of 4 (1, 2, 5, 6) I have as (B + ?) and for the group of 2 (3, 1) I have as (C + A).

So far I have (B + ?) * (C + A)

What should I have for the ?

Is it okay to leave the B by itself in POS form? I don't think it is.

I appreciate the help.