Comment by calvinmorrison
10 hours ago
The last real analog stuff would be either carb'd bikes / cars or mechanical fuel injection, which is the worst of both worlds.
However, those ECUs are more closely related to embedded programming than digital dial outs and SIM Card loaded cars with a internal network canbus these days. Analog / Digital Inputs and outputs as a closed loop controller.
ECUs talked to each other over a digital bus long before anyone added a connection to the internet.
The first 20yr of automotive computers they weren't really talking to each other and when they were it wasn't really bidirectional and it wasn't typically on a bus unless you wanna call a dedicated wire a bus.
I was working on diagnostics for cars using CAN in 1995.
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