The CDC 6500 console operator could observe the most recent job status for each control point. I programmed a job that turned this into a slot machine.
I wrote this as a real-time application modeling the slowing spin-rate of each wheel. The console operator could signal my job with a keystroke that would normally abort. I caught this and gave the wheels a new spin.
[apple] [orange] [orange] abort to spin
I was reminded of this program when I saw basically the same thing offered as a sample electron application using the new apple touch bar. post