How did elevators know what floor they were on and how far to go before computer automation?

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How did elevators know what floor they were on and how far to go before computer automation?

In: Engineering

Before computers they literally had a guy in the elevator who would control it with a lever.

Before silicon logic there was electromechanical automation, all switches and relays. Before that there were elevator operators.

https://www.youtube.com/watch?v=-8X9GOdBXGo