The big gripe about the Imperial/metric issue is "who gets to contend with
the extra digits to the right of the decimal point?"

If the program works in Imperial natively, then using metric means the
metric people have to contend with the extra digits.
If the program works in metric natively, then using Imperial means the
Imperial people have to contend with the extra digits.

So, you ya gonna inconvenience?  Altium has made their choice, and it is the
metric people.

Sometimes I'm glad to be one of the Imperial people ;-)
And sometimes not (a friend asks "Hey, Ivan, how many liters is your 500
cubic inch Caddy engine?")

Best regards,
Ivan Baggett
Bagotronix Inc.
website:  www.bagotronix.com


----- Original Message -----
From: "John Haddy" <[EMAIL PROTECTED]>
To: "Protel EDA Forum" <[EMAIL PROTECTED]>
Sent: Thursday, August 01, 2002 10:40 AM
Subject: Re: [PEDA] DXP comment, but slightly off topic


> For me, the vast majority of components are hard metric specified! I do
> a lot of fine pitch SMD.
>
> As has been noted before on this forum, if Protel had a hard metric
> base unit in the database it could still provide imperial entry for those
> that live in backward countries :-) but with the significant advantage
> that there would be no conversion error when converting between display
> units.
>
> Protel's use of english base units is a fundamental flaw that could easily
> have been rectified in the process of writing a major new release (e.g. in
> Protel 98 or in DXP), and it would have been easy to specify that version
5
> databases are hard metric, while versions below this are english base
units.
> The fact that it wasn't was, for me, the biggest disappointment with DXP.
>
> John Haddy
>
>
>
> -----Original Message-----
> From: vincent mail [mailto:[EMAIL PROTECTED]]
> Sent: Friday, 2 August 2002 12:04 AM
> To: Protel EDA Forum
> Subject: Re: [PEDA] DXP comment, but slightly off topic
>
>
> ok . open any electronics component catalog.  ( digikey , mouser , avnet
> , farnell ,newark arrow )and look at parts
>
> you fill find things like 50 mils 25 mils 100 mils for lead pitch and
> widths. and then look at the equivalent in millimeters. Which numbers
> would you rather key in to create a new footprint ? Sure there are
> metric parts but we don't use them ( yet ) . Ribbon cable is still a 100
> mil pitch , Smd components ares still 50 mil pitch ( some tqfp and bga's
> are in millimeters true )  and i'd rather key in 25 mils when creating a
> part then a crazy value like 0.62954 millimeter.
>
> i think we will only be successful in switching to millimeter when there
> are no more parts made using imperial pitches. and that is not going to
> happen for a long time.
>
> And believe me i know what a pain converting is , I am from belgium and
> have grown up with the metric system , after 2 years in the usa using
> inches , and feet and pound and gallon that heve no linear relationship
> to them is still a nightmare. But for board layout i translates in nice
> round numbers.
>
> > In a global economy standardisation is essential, do you really think
> > that inches have a future?
> > The IPC recognises this, which being American based is very
> > surprising, but encouraging.
> > Even Britain the bastion of Imperial is slowly but inexorably moving
> > towards metrication.
> > I was brought up on imperial and pounds and shillings, so I'm fairly
> > understanding.
> > As far as I'm aware the USA is the only country that doesn't have a
> > metrication programme in effect
>
>
> >
> > Chris Mogford.
> > ************************************************************************
> > * Tracking #: E7E9D6B0EAA28E45B0C48EF8E6F4E50D563153A1
> > *
> > ************************************************************************
> >
>
>
> --
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>      _____________
>     /____________/  Vincent Himpe
>    // _____  ___/   Lab Manager
>   / \ \   / /  /    ST Microelectronics
>  /___\ \ / /  /     5510 Six Forks Road . Suite 200
> /______//_/__/      Raleigh NC 27612
>
>                     Tel : (919) 850 6070
>                     Fax : (919) 850 6689
>                     e-mail : [EMAIL PROTECTED]
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>
>
>
>
>
>

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