# Stuck with logic gates

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• Apr 18th 2012, 11:21 AM
uperkurk
Stuck with logic gates
I know each of the logic gates what what the outcome would be if but I have a practice question here that I just don't really know how to draw.

X = ((NOT A) AND(NOT B)) OR A

How would I draw this using logic gates or a truth table? If you could draw it in paint or something and then upload it that would be amazing.

Thanks.
• Apr 18th 2012, 11:26 AM
Plato
Re: Stuck with logic gates
Quote:

Originally Posted by uperkurk
I know each of the logic gates what what the outcome would be if but I have a practice question here that I just don't really know how to draw.

X = ((NOT A) AND(NOT B)) OR A

How would I draw this using logic gates or a truth table? If you could draw it in paint or something and then upload it that would be amazing.

This webpage answers both questions.
• Apr 18th 2012, 11:40 AM
uperkurk
Re: Stuck with logic gates
Wow what an awesome site. Thanks but does it take into consideration the brackets?

Nevermind I see that it does. Thanks this site is actually amazing.
• Apr 18th 2012, 12:40 PM
emakarov
Re: Stuck with logic gates
Since I have already drawn the circuit...

https://lh3.googleusercontent.com/-2...ogic-gates.png
• Apr 18th 2012, 01:09 PM
uperkurk
Re: Stuck with logic gates
Thanks emakarov. That makes sense..... the 2 NOT gates and the AND gate are read like NOT a AND NOT B and then the OR gates comes in for OR a?

NOT a AND NOT b OR a
• Apr 18th 2012, 01:31 PM
emakarov
Re: Stuck with logic gates
Quote:

Originally Posted by uperkurk
the 2 NOT gates and the AND gate are read like NOT a AND NOT B and then the OR gates comes in for OR a?

Yes.

https://lh6.googleusercontent.com/-Z...gic-gates1.png