Help!! need a solution for a logic structure

[de><ta]

ok, i am stuck on a VLSI project. I have to get a function for a NOT(inverter) gate using a 3 input OR gate, a 2 input AND gate and a 2 input XOR gate.

basically i have to create an inverter for a signal, can be a high or a low, but using those gates i told u of i have to invert the signal.
eg. if i get high using those gate only i should get low, but if i get low using those gates only i have to get a high value.

Some one help, please... they put a limit on the max number of chips i can use on the PLD. It's a simple logic question and my mind is numb from working so long and i cant find any TA's... thanks.

[de><ta]

come on people...

[fastguy94416]

That whole thing is about 50 feet over my head. Sorry bud

[DaveW]

I have no clue what VLSI is, but I do know boolean logic.

Using only the gates you have you can't do what was asked, unless that "AND" was really supposed to be a "NAND" and the question is just supposed to mess with your head.

However, if you built this on a circuit board you only need the XOR. Connect one input on the XOR to the positive terminal on your battery, or "positive" track on the circuit board. You effectively hardwire that input to always be 1 or true. Then it will output the NOT of whatever you put in the second input.