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Subject:	Re: [geda-user] Re: off-topic: daydreaming about modularization
From:	John Doty <jpd AT noqsi DOT com>
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Date:	Wed, 26 Aug 2015 11:43:42 -0400
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On Aug 26, 2015, at 11:20 AM, Markus Hitter (mah AT jump-ing DOT de) [via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:

> Am 26.08.2015 um 16:48 schrieb John Doty:
>> Starting from simple primitive objects, gschem can compose
>> arbitrarily complicated objects containing arbitrarily complicated
>> objects with embedded or attached metadata of arbitrary complexity at
>> all levels. But pcb has only one (restricted) level of composition.
> 
> One important distinction between gschem and pcb is that pcb has to deal with reality. It reflects real hardware, while gschem just displays a pure theoretical model. Theoretical models are always easier to deal with, because their whole purpose is easy handling of something.
> 
> In reality you suddenly meet hardware made of epoxy, glass fibers and copper. Hundreds of properties with trillions of possible combinations, if reality can be squeezed into a data model at all.

But, in fact, pcb does not capture or model those. On the other hand, when drawing a schematic for an IC, gschem can capture the many parameters of a physical model, and your favorite simulator can interpret them.

> That makes it much harder to develop such a data model and implementing all the actions.
> 
> 
> Markus
> 
> -- 
> - - - - - - - - - - - - - - - - - - -
> Dipl. Ing. (FH) Markus Hitter
> http://www.jump-ing.de/
> 

John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd AT noqsi DOT com

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