A while back, I "saved" some cartridges from being tossed. The label
says "Digital Controls, Learning Center, Multiplan (title varies
depending on cartridge), Registerd Trademark of Microsoft Corporations,
Copyright Digital Controls, Inc."
In the process of going through stuff, I found some manuals that
apparently went with these cartridges. In the "Materials and Equipment
Needed", they make reference to a Digital Controls Learning Center. In
addition to the Center, the user needs a computer with the software (for
the program being taught) properly installed. It sure sounds like this
is some sort of teaching machine. Does this ring a bell with anyone?