Oh wow, I never thought I would see this again! I learned logic gates using this, and even made a video game out of a grid of LEDs. You were a car that had to

Oh wow, I never thought I would see this again! I learned logic gates using this, and even made a video game out of a grid of LEDs. You were a car that had to dodge oncoming traffic by switching between columns. EDIT: After trying it, it's not the one I remember. I used the very similar program LogicSim http://www.tetzl.de/java_logic_simulator.html#download http://www.tetzl.de/java_logic_simulator.html#download Runs perfect still. Just make sure you have java version 1.4 and up ;)