Comment by carefree-bob
15 hours ago
You should check out the NYC subway, which has electromechanical relays, cloth covered wiring, and pre-WW2 analogue panels.
They do not even have an OS!
15 hours ago
You should check out the NYC subway, which has electromechanical relays, cloth covered wiring, and pre-WW2 analogue panels.
They do not even have an OS!
Let me assure you that Deutsche Bahn also still operates about 500 mechanical signal boxes, about 100 are from pre-WW1. Not these fancy, modern electromechanical relays (which Deutsche Bahn of course also has).
That's far superior than running an outdated general computing platform. Electromechanical devices are simple, easy to understand, and replaceable. It may be harder to diagnose problems but with maintenance it will work forever.
+1 from me for relais technique. It is easy to replace, even in 1000 years. Today PLCs are great and fun. We can do a lot of cool things with them. Just with the short and shorter life cycles, sometimes even less than 10 years. If something breaks you have to replace so much stuff for a small broken piece. Thats such a bummer in todays industrie automation.