and the original source of both the engadget and geek articles: https://www.woodtv.com/news/grand-rapids/1980s-computer-controls-grps-heat-and-ac_20180329064517

and the original source of both the engadget and geek articles: https://www.woodtv.com/news/grand-rapids/1980s-computer-controls-grps-heat-and-ac_20180329064517550/1086705524 https://www.woodtv.com/news/grand-rapids/1980s-computer-cont...