Algodoo

This mechanicle binary calculator can add, subtract, MULTIPLY and count. I'm no good at scripting, so I stick to those old chool, mechanicle, slow, binary, calculator monstrers. it is just a mess and it can fail sometimes, but it works. The controls are not good at all. change them if you want to! If you don't understand the binary number system, you can try the example. If yo don't understand the controls, you are probably not alone.
It always runs the same algorithm:
C register=(1+A register)*B register+C register. Or:
C=(1+A)*B+C
All the controls and instructions, (and some explanations) are in the scene.