Texas Instruments LCM-1001 Microprocessor Trainer (1976)

Yes, it works!

 

www.flickr.com/photos/retrocomputers/32294437793/in/datep... (and, here, the inner workings: www.flickr.com/photos/retrocomputers/32727415230/in/datep...)

 

www.old-computers.com/museum/computer.asp?st=1%20&c=999

 

de.wikipedia.org/wiki/Texas_Instruments_SBP0400

Done