Subject:
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Re: AND gate brick?
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 24 Dec 1999 18:09:43 GMT
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Original-From:
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Barbara Nostrand <nostrand@bradley.eduSAYNOTOSPAM>
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Viewed:
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429 times
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Hi Andy.
The reason for symbols for AND or NAND or whatever is because those
are what are used when you draw circuit diagrams. Essentially, the
idea is pedagogical. Once you are familiar with them, the tradiitional
AND, NAND, NOR, XOR, &c. symbols are very recognizeable and easy to
read. Also, they have a nice way of accepting multiple inputs which
simply the word "AND" doesn't.
One AND or OR or whatever isn't such a big problem, but imagine a
huge piece of paper covered with AND's, NOR's, XOR's, &c. all
connected to each other with lines which sometimes just go to
indirection symbols instead of to actual components. Basically,
you can use as much visual help as you can get. Among other
advantages, the traditional symbols have an easily recognizeable
input side and an easily recognizeable output side.
Best Wishes.
Barbara Nostrand
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Message has 3 Replies:
 | | Re: AND gate brick?
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| (...) Additionally, if you had bricks for all these types of functions, you could build logic systems with the bricks directly from schematics or circut diagrams... Imagine being able to say something like, "signal the RCX if touch sensor 1 and 2 (...) (25 years ago, 24-Dec-99, to lugnet.robotics)
| | | Re: AND gate brick?
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| I meant on the bricks. Put the word "AND" or "NAND" or "OR". Like this: :---...---: : AND : :---...---: On diagrams, you could still use the symbols. (...) (25 years ago, 25-Dec-99, to lugnet.robotics)
| | | Re: AND gate brick?
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| Hi Andy. Your drawing works just fine for ONE gate. Now imagine a 135 x 44 piece of paper covered with 50 or more of the things. Folks didn't come up with the special symbols in order to make things harder. Imagine trying to do arithmetic if you (...) (25 years ago, 30-Dec-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: AND gate brick?
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| Hi. I sincerely doubt that LEGO has ever released logic bricks. However, I think that it is a great idea. However, a two input NAND brick and a bridge would be much more useful. As for symbols. Are you refering to the traditional pictorial symbols (...) (25 years ago, 24-Dec-99, to lugnet.robotics)
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