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Subject:	Modelling boolean gates with trains
Newsgroups:	lugnet.general, lugnet.off-topic.geek, lugnet.robotics, lugnet.edu, lugnet.trains
Date:	Wed, 20 Sep 2000 08:07:01 GMT
Viewed:	33 times

Okay, this might be totally impossible (or insane or banal), but has anyone modelled boolean functions on a train layout (System or Duplo)? At the moment I'm thinking "train on the line"=1, "not on the line"=0. NOT could be done by reversing the trains direction, OR by having two tracks enter one line at points, but what about AND ? Or does AND not make sense given the definitions of 1 and 0? Maybe you need "train pushing a wagon"=1... --DaveL (sorry for any excess cross-posting)

Message has 3 Replies:

		Re: Modelling boolean gates with trains
If by 1 your mean TRUE and by 0 you mean FALSE, and given that in Boolean logic TRUE = NOT FALSE, then two conclusions from what you have said is "train on the line" = "reversed" "train not on the line" and "train not on the line = "reversed" "train (...) (24 years ago, 20-Sep-00, to lugnet.robotics)

		Re: Modelling boolean gates with trains
(...) If NOT is reversing direction, than 1 is forward and 0 is back. (Or the other way around; whatever.) But I'd be curious to hear how you envision more complicated logic! (24 years ago, 20-Sep-00, to lugnet.general, lugnet.off-topic.geek, lugnet.robotics, lugnet.edu, lugnet.trains)

		Re: Modelling boolean gates with trains
(...) For those of a mathematical disposition, I vaguely remember an article on the subject of building computing logics out of train tracks in 'Eureka' (the annual journal of the Cambridge University undergraduate math society, the Archimedeans) a (...) (24 years ago, 20-Sep-00, to lugnet.general, lugnet.off-topic.geek, lugnet.robotics, lugnet.edu, lugnet.trains)

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