#### achcha

Joined Dec 24, 2011
2
(a'+b)(a+b+c)c'

' = NOT

#### jegues

Joined Sep 13, 2010
733

#### spider87

Joined Dec 9, 2011
7
Let us just *magic* our way into knowing what you're on about.

If I recall, this is actually a special formula but that was from high school..

Also, I'm not sure what you mean by ' = NOT . Are you saying things with a ' are negative?

I'm not a math expert though so maybe I missed something.

#### MrChips

Joined Oct 2, 2009
20,861
This is a Boolean Algebraic expression.
What the op is asking is how do you reduce this to its simplest form.

-- There are only 10 types of people in this world. Those who understand binary and those who don't.

#### bwack

Joined Nov 15, 2011
113
Study the Boolean Algebra chapter in the online textbook.

You see a product of three sums in your expression,
(a'+b)
(a+b+c) and
c'
you need to multiply them together to get a sum of products, then use and find the boolean identities (see the boolean rules for simplification section of the online textbook)and reduce the expression.If you try it in here we can help, but we won't give you the answer.

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#### Vahe

Joined Mar 3, 2011
75
I think the original poster might either be asking for a way to simplify the expression and/or implementing the function using CMOS gates. However, I am not in the business of guessing. If the original poster will show that they have put some effort in trying to solve the problem, someone might be able to help. Seeing the word "urgent" is making me quite lazy ....

#### MrChips

Joined Oct 2, 2009
20,861
It is general practice on AAC not to do people's homework especially when it is urgent and they do not know how to post a proper title.