I am doing my revision on logic gates and I have a question.

1. Use demorgans theorem to reduce this equation use only or gates. You cannot use the xor function in your equation.

/A/B/C+/AB/C+A/B/C+ABC

Here is my answer, I just need some clarification.

/a/c(/b+b)+a(/b/c+bc)

/a/c+ab

then using demorgans

/(//a/+/c+/a+/b)

= /(a+c)+(/a+/b)

 

/a/c(/b+b)+a(/b/c+bc)

/a/c+ab

Firstly, how have you come about this step?

I am also not sure you have applied DeMorgan's correctly, but we can deal with that later.

Dave