In 1991 I updated for the last time a piece of software (DOS based with proprietary multithreading and graphics layers). The software controls some scientific d

In 1991 I updated for the last time a piece of software (DOS based with proprietary multithreading and graphics layers). The software controls some scientific device, collects, processes and displays experimental data in real time and stores data for later analysis. About 2 years ago or so I think I was shocked to discover that they're still using said device and the software in unmodified form running it under DOSBox or something like that