Related, from 1959, many years before CARDIAC:
PAPAC-00 A 2-register, 1 bit, Fixed Instruction Binary Digital Computer
https://longstreet.typepad.com/thesciencebookstore/2010/11/a...
PAPAC-00 A 2-register, 1 bit, Fixed Instruction Binary Digital Computer
https://longstreet.typepad.com/thesciencebookstore/2010/11/a...
> (3) that the typical 12-year-old youngster has the interest, skill and basic knowledge necessary to build and understand simple working models of practically anything
Indeed.