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From: Dwight K. Elvey <dwight.elvey_at_amd.com>

Date: Tue Sep 28 20:21:54 2004

*>From: "Vintage Computer Festival" <vcf_at_siconic.com>
*

*>
*

*>On Tue, 28 Sep 2004, Steve Thatcher wrote:
*

*>
*

*>> when someone can pick up a logic description and understand it WITHOUT
*

*>> having to figure out what each sytmbol means in the context of the
*

*>> usage, then it is simply more understandable. If I picked up something
*

*>> that had two binary numbers wiht a PLUS sign inbetween, I would not
*

*>> assume that it meant OR, only if you would dig further does the PLUS
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*>> sign make sense. If you simply said OR, then there is no confusion and
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*>> it is self documenting. I think Sellam was trying to make this point
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*>> with regards to symbology.
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*>
*

*>Right. What I was getting at is that there were plenty of other symbols
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*>on the typewriter or keypunch to choose from.
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*>
*

*>Having gotten the explanation as to why those operations were chosen, it
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*>does make sense and is somewhat elegant (I'll reluctantly concede), but
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*>it's still stupid as far as I'm concerned. Why didn't they use * or X
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*>for AND then?
*

Hi Sellam

Some do use * or X. Would that have helped you? Although, others

seem to to describe things like set theory, I can show a simple

example of the practical use.

A.(B+C) = A.B + A.C ( just like ordinary math )

A+(B+C) = (A+B)+C ( again, just like ordinary math )

Other than that, I don't think there is a good reason.

Dwight

Received on Tue Sep 28 2004 - 20:21:54 BST

Date: Tue Sep 28 20:21:54 2004

Hi Sellam

Some do use * or X. Would that have helped you? Although, others

seem to to describe things like set theory, I can show a simple

example of the practical use.

A.(B+C) = A.B + A.C ( just like ordinary math )

A+(B+C) = (A+B)+C ( again, just like ordinary math )

Other than that, I don't think there is a good reason.

Dwight

Received on Tue Sep 28 2004 - 20:21:54 BST

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