[mikewarot]

Somewhere around 1990, I wrote a system in Turbo Pascal to monitor and record the results from a PLC used to calibrate large water meters for the City of Chicago. I had a cooperative multi-tasking system that I used to keep everything updating a GUI while doing all the other work.

Somewhere around 2010, they contacted me because they had a problem with it when they replaced the computer with a newer system. It turned out they had the parallel input cards swapped, and it was put back in service. As far as I know it's still in service.

It's quite possible that thing will outlive me. Why? Because it's tied to hardware that works and does economically important work.

[davidhbolton]

I wrote the postal game Quest back in 1989-1990, a 1,000 player postal game. 40,000 lines of Turbo Pascal. Others came after and fixed some of the bugs and it's now run over the internet. https://kjcgames.com/quest/quest.htm