Commodore VIC-20
The lab in which Prof Holt is breeding her subhumanoids has a Vic 20 strapped to the wall.
Tromaville's nuclear power plant has been rebuilt, this time with the Tromaville Institute of Technology within the grounds. At the college, Professor Holt has developed a race of "subhumanoids" designed to perform menial tasks, but they inclined to spontaneously melt down.
The lab in which Prof Holt is breeding her subhumanoids has a Vic 20 strapped to the wall.