![35 years [766x756 - 121KB]](https://poal.co/static/images/6d5c6d191989c89e.jpg){kind=link}
I first used them 41 years ago (1983) with HP Microcontrollers (ithistory.org). I wrote the OS for a rack and stack test system we built "back in the day".
I first used them 41 years ago (1983) with [HP Microcontrollers](https://www.ithistory.org/db/hardware/hewlett-packard-hp/hp-9816). I wrote the OS for a rack and stack test system we built "back in the day".