So AND gate can be composed from these two gate types as wiki states by formula:
A AND B = (A OR B) XOR (A XOR B)But here we have two problems:
- We need many parts of dominos, because according to formula we need 2 XOR gates and 1 OR gates. Besides XOR gate is relatively big.
- Also as wiki states that XOR gate is extremely dependent on timing. So because we have 2 XOR gates here - dependence on timing will increase too.
Well my scheme has it's own instability which has dependence on distance between dominos. But in my opinion distance can be more easily adjusted than timing between two events without any external devices ;-) So this is how my domino AND logic gate performs in live environment:
And here is an example schema how NOT gate could be built:
Have fun with domino computing ! :-)