Lego Dacta? Never heard of that until today =)
I googled around a bit to learn about it, interesting educational 'branch' of Lego smile

The one you linked is interface B. Interface A info is over here:
http://lukazi.blogspot.nl/2014/07/lego-legos-first-programmable-product.html

*edit* The interface brick connects to a PC(software control happens there), so I assume the interface only has a serial controller and no CPU on it.

also, pcb pics of the Control Center here http://freggelweb.de/technic-controlCenter.html

Last edited by hap; 07/24/15 07:41 PM.