Confession: I'm an old geezer who doesn't understand this internet stuff. But:
I didn't have any problems finding information on the ECP-18. https://blog.cleancoder.com/uncle-bob/2015/02/19/ComputerHarem.html mentioned here: https://files.eric.ed.gov/fulltext/ED041455.pdf 1966 vintage product of Datamate Computer Systems Inc. Bitsavers has a directory for the DM-70, a later system, but there are other numerous mentions on the web. Even epocalc.net turns up a listing for the ECP-18, as well as the ECP-18A. http://www.epocalc.net/php/liste_models.php?texte=ECP-18&look=All+fields&yearmax=2020&nocomp=pc Sometime around 1967, Gamco Industries acquired Datamate. CHM has a marketing brochure for the ECP-18: https://www.computerhistory.org/collections/catalog/102776364 According to a couple of references, the ECP-18 was classified as an "educational computer". But then, I've given you enough information to get started. --Chuck
