SV: RE: SV: Re: [sdiy] Altrium Designer/Protel mm versus mils

[karl dalen]

--- Vesa Lahteenmaki <vjhl2000 at hotmail.com> skrev:

> >From: karl dalen <dalenkarl at yahoo.se>
> >
> >Speaking of going off grid, how many of you have
> >switched into designing PCB's in mm instead of mil??
> >
> >Yes, there has been a change, all new PCB's shall be
> >designed in mm thesedays as they say!
> >
> >KD
> 
> At least the better cad software lets you select which units to work with, 
> mm or mils.
> So you can work with either one as you please.

Thats exactly what i pooke at, namely you dont work with either one
there has been a ""change"" and you are obliged to design in mm not as
you please, the please days are over, i dont say this **they** say so!


> Metric units are now gaing more popularity even in old inch countries ( UK, 
> US ) because ic packages keep shrinking and are based on the metric system. 
> Leg pitch is now often 0.5mm, compare that to the old DIP pitch 2.54 mm ( 
> 100 mils ).

Thats not the point, the point are, **they say so** they say you must
design in mm and not in mil.

Dont ask me for whom *they* are, i assume *they* are the higfly people
in the PCB industry but i dont know for shure, just that *they say so*
and there is no choise no more.

Personally o dont care much, i do front panels in mm and boards in mil
just out of old habits.

KD 


	
	
		
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