Algodoo

I inserted the example disk (letters and numbers) as explained in the scene, but it doesn't work. After pressing different keys, nothing shows on the display.

Works for me, I pressed whatever I could to get this to work and it did work eventually. Instructions are a bit lacking though. Hopefully the author fixes that, and maybe the malfunctions.

I thought I commented on this but I didnt
Anyway I think this is cool but impractical, however it could be pretty easy to make a computer of sorts to hook into this.

I got it to work now. The problem that I had before is, when I pressed the "D" key (pull in disk) it took a long time to pull the disk in, so I thought that it wasn't doing anything.

One other issue that you may want to address is, when I picked up the alphabet and numbers disk in order to insert it into the computer, it accidentally bumped into the blank disk and sent it flying away! Maybe make it easier to insert and remove disks? One suggestion would be to orient the disks in the correct position while they are stored. That way the user won't need to rotate them in order to insert them.

One more thing... Push (D) and pull (F) keys are "toggled" which means that after pressing one of those keys they remain in the same state, making it impossible for the other key to function. The fix would be to automatically disable each function when the push or pull task is completed.