After finding the game and reacquanting myself with the devices and physics, I set out to create something usefull (this is relative..) I set off with designing some logical gates. The AND, OR, and NOT gates were a breeze, but the XOR gate was more of a challenge. Size is critical here.. It's not an option to build an XOR out of OR's and AND's.
Heres a picture of my AND gate.
The link between the gates was a red laser. Red laser on = 1, Red laser off = 0.
Here's the links to all my gates: AND, OR, XOR, and NOT.
Now the only logical thing (excuse the pun) to do when you've built these gates is construct a full adder. Here it is.
The fullsize image can be downloaded here.