Digital Logic

Grundlterror

So I have a test coming up in Digital Logic (Digital Design) and my book is absolutely horrible with examples.

I'm looking for some review questions encompassing the following topics:

# Simplification using Boolean Algebra Rules
# K-Maps (2, 3 and 4 variable)
# Converting from and to Sum of Products form
# Converting from and to Product of Sums form

Does anyone know of a half decent (or completely decent, preferably) online text with good examples and solutions? Or possibly a book I can pick up from B&N or Borders or something of the sort?

ToyD

Here is some google-fu:

http://www.ee.surrey.ac.uk/Projects/Labview/minimisation/karnaugh.html
http://www.ee.surrey.ac.uk/Projects/Labview/minimisation/algmanip.html
http://www.facstaff.bucknell.edu/mastascu/eLessonsHTML/Logic/Logic3.html

I think a good google search will net you plenty of online notes and examples. I thought my book going through this was decent, unfortunately I do not have it handy to give you the title, so I chose google-fu.

Good luck.

Grundlterror

Thanks! Although, there is only a single example in the second link I will continue the google-fu!

I thought there was one link I remember seeing that apparently had some awesome examples/solutions. I couldn't find it again, although the search shall continue!

ToyD

One thing I will throw in for you. Mostly for real-life and not your upcoming test. K-maps and simplification are good tools. However, using your head first is better. Occasionally you will see something that the K-map does not see. A condition that you can use to pull something out of the circuit that, if left in the K-map, will unnecessarily complicate the design.

Such as a toggle for scrolling forward or reverse. Or... an on/off switch.

Grundlterror

For future reference, this site doesn't have many examples but good lord it explains everything so well:

http://www.allaboutcircuits.com/vol_4/index.html