DICE: a Discrete Integrated Circuit Emulator

Interesting... rather than being an interactive circuit simulator as I expected, this is an engine for emulating circuits composed of 7400-series logic chips, 555 timers, etc., defined at compile time. It includes definitions for several games built this way, such as Pong. Cool project, but not very well described.

Circuit emulators are always a lot of fun.

The (first I think) project in Coursera's Reactive Programming class had you play with a circuit simulator written in Scala. It was an interesting assignment to work through.

I think all you did was add a demux (the assignment focused on epidemiology iirc) but it would have been a great project to expand upon throughout the course. For example, using akka in the simulator to model different components interacting in a "clouduino.

For those into building entire systems on top of circuits, btw, I can't recommend nand2tetris.org strongly enough.