Being an old DeVry man, circa '58/'59 , (when it was on Belmont Ave!) that Hallicrafters schematic looks strangely familiar to me. As for change, I'm still struggling with cps changing to Hertz!!
In 1957 Popular Electronics magazine (out of print) published an article for constructing a "rudimentary computer" that could play the old parlor game of "21". It utilized a five deck mechanical stepping relay to do it's "calculations" and a series of 21 lights, By pushing a 'player' button, a...
In 1957 Popular Electronics magazine (out of print) published an article for constructing a "rudimentary computer" that could play the old parlor game of "21". It utilized a five deck mechanical stepping relay to do it's "calculations" and a series of 21 lights, By pushing a 'player' button...