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.
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.