alt Hacker NewsYou 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!
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driverdan • today at 3:35 PM
That's far superior than running an outdated general computing platform.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.
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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).