4 ms·

Ian Stewart wrote about calculational train circuits like these in an article in Scientific American in 1994 : “A Subway Named Turing” Subscription-required l

Ian Stewart wrote about calculational train circuits like these in an article in Scientific American in 1994 : “A Subway Named Turing” Subscription-required link : https://www.nature.com/scientificamerican/journal/v271/n3/pdf/scientificamerican0994-104.pdf https://www.nature.com/scientificamerican/journal/v271/n3/pd... Love the closing line (as the train passengers discussing the concept of train logic circuits realise they haven’t come to a station in awhile): >“This isn't any touring machine," the guard said indignantly. "This is a personnel commuter, buddy." >At least, I think that's what he said.

garethrees 8y ago
Ian Stewart's article in Scientific American was based on "Train Sets" by Adam Chalcraft and Michael Greene (Eureka 53, pp. 5–12), which also provides the basis of the Duplo constructions. (But note that Duplo has linked points as well as sprung and lazy points, which allows for more compact constructions.) http://www.monochrom.at/turingtrainterminal/Chalcraft.pdf http://www.monochrom.at/turingtrainterminal/Chalcraft.pdf
M2Ys4U 8y ago
>Subscription-required link : https://www.nature.com/scientificamerican/journal/v271/n3/pd.. https://www.nature.com/scientificamerican/journal/v271/n3/pd.... Of course you can always access academic papers using sci-hub ;) https://sci-hub.tw/10.1038/scientificamerican0994-104 https://sci-hub.tw/10.1038/scientificamerican0994-104