Well, when we get to 1000+ pin per side PQFPs, I'll start
worrying - but then again, I'm sure my assembler will be
worrying more!
John Haddy
P.S. It's a bit windy for the beach today - and 25C is too cool.
> -----Original Message-----
> From: TSListServer [mailto:[EMAIL PROTECTED]]On
> Behalf Of Ian Wilson
> Sent: Tuesday, 6 March 2001 10:30 AM
> To: Multiple recipients of list proteledausers
> Subject: [PROTEL EDA USERS]: Give up, there is no point (Ex: Confused
> Newbie on Footprints)
>
>
> On 10:10 AM 6/03/2001 +1100, John Haddy said:
> >By definition, 1 inch = 25.4mm exactly. This was standardised
> >some decades ago.
> >
> >It's when rounded numbers are used that problems occur.
> >
> >Cheers,
> >
> >John Haddy
>
> Off topic a little...
>
> But the metre (and hence inch) are derived quantities (variables) so all
> our footprints are totally useless! Do you hear - *useless*!
>
> The speed of light, c, is constant. Any improvements in the how
> fast light
> travels does not affect the number in metres per second. The
> length of the
> metre is changed instead. So there is no point in trying to design
> footprints as the next time a physicist improves the estimate of
> c we have
> to go back and update all out libraries.
>
> I'm giving up and going to the beach....
>
> Ian
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