# truth table to boolean expression or schematics

*need help converting the truth table to boolean expression or even better, schematics*

1. i don't know electronics too much

2. i am not a student nor is this an assignment

simply looking for help in converting this truth table

1. i don't know electronics too much

2. i am not a student nor is this an assignment

simply looking for help in converting this truth table

active| newest | oldestHowever, I suspect this may be a school-set challenge?

Odd

the help i am looking for, this is NOT school related nor it is how minified, abstract, of obfuscated your code is

turn the above truth table into a circuit board-NO CHIPSBut several of the states you define are going to be difficult if not impossible to do with out using logic gates. They are very simple to use. They have been designed of off the shelf use as ic's. But not allowing their use makes what may seem very simple to you a very complicated project.

You can find a description of the gates you need here.

You can find circuit descriptions for building logic gates out of transistors and such here. This one also contains more info on how they work. Check out the signal gate. That on looks really interesting to me.

Now if you've got a free Sunday afternoon then you won't have any problem trying to "

turn the above truth table into a circuit board-NO CHIPS".Definitely looks like homework. Simple logic with ands/ors/nots can easily do this. Think about what the logic has to be for one set of r/g/b LEDs, then replicate it for the others.

The real trick is doing it with maximal efficiency; you can probably combine some of the sub-expressions and/or reduce the number of parts by using gates that have negation built into them or more complicated gates. Or do some passive logic using diodes or open-collector gates. But... "Make it work, make it good, make it great, in that order" until you know the shortcuts.

The trivial but expensive solution, since it did say "any", is to burn that truth table into a PROM.

use of logic gates are requiredSteve