The KIM-1 that sounds like Stephen Hawking (or: “jitbanging” DECtalk)

I wrote a bunch of code for a KIM-1 in the mid-80s because it was being used to control an industrial machine.

https://blog.jgc.org/2013/04/how-i-coded-in-1985.html

The KIM-1 was the Raspberry Pi of the late 1970s. I spent a lot of time using them in little automation projects while in college. There was no operating system involved at all; everything from the reset vector on up was my code.