Subject:
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Re: Modelling boolean gates with trains
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 20 Sep 2000 11:55:42 GMT
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Original-From:
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Brian B. Alano <alano@kivaAVOIDSPAM.net>
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Viewed:
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756 times
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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 on the line".
Boolean logic, as I understand it, would have to satisfy these identities:
true = NOT false
NOT true = false
true AND true = true
true AND false = false
true OR true = true
true OR false = true
false AND true = false
false AND false = false
false OR true = true
false OR false = false
What about defining NOT as "if the train is off the track, put in on the
track. If it is on the track, take it off".
Dave Low wrote:
>
> 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)
--
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