Andy,
I think that you missed my point. Totally.
I remember giving a presentation at the Designer Council Symposium in 2001
on how to draw Schematics so that they made sense. I was heckled by a fella
in the audience that was asking about using Metric units to draw the
Schematic Symbols - for crying out loud! Sheesh! Like it really matters, at
THAT level.
Anyway, I digress. I often wondered, after that experience... if one IS
going to take the time to change their units of measure - they REALLY need
to go 100% (especially if they are as insistent as that fella).
Only thing is... here in the good ol' US of A... if you walk into ANY Office
Depot or other office supply store, you are MUCH more likely to find a ream
of A-Size (8-1/2"x11"), Legal-Size (8-1/2"x14") or B-Size (11"x17") paper
waaaaaaay easier than you will locate any Metric sized paper.
The same goes for printers - although, it may be easier to find printers
here in the states that can 'handle' metric sized paper, ONLY due to the
fact that they also sell the same printer overseas.
So Andy. A question for you. Do YOU use Metric sized paper? Do YOU create
Schematic Symbols in Metric units? I'm just curious.
To me - I use whatever units are necessary to get the job done. As others
have mentioned, many (if not all) of the newer Packages that manufacturers
are using are Metric as opposed to Imperial (although I hate the term
'Imperial' - as it seems to imply an Imperial gallon - which is only used in
Canada).
It is not all that important to me which units are used - as long as I can
get the job done. I will usually switch my CAD tool to whichever units that
I need to use - I.E. Metric for creating the Pattern, and then keep running.
I have my handy-dandy Radio Shack Conversion Calculator nearby for making
quick conversions from units to units.
If the IPC REALLY wanted to 'help' us designers, perhaps they could get all
of the EDA and CAD vendors together in a room and get THEM to all use
databases that were compatible. THAT would make our jobs a bit easier.
Regards,
James Jackson
Oztronics
210-675-4087
http://joj.home.texas.net/
----- Original Message -----
From: "Kowalewski, Andy" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, July 23, 2004 4:38 PM
Subject: Re: [DC] Inches vs Metric
I didn't say it was easy... :-)
And don't stop at paper - there's miles, gallons, degrees Fahrenheit,
tyre pressures etc etc and etc.
Our little part of that huge transformation isn't so difficult, and
don't forget that we're board designers - we work miracles daily, and we
can do absolutely ANYTHING !! :-)
Andy K.
Sychip Inc
Office (972) 202 8852
-----Original Message-----
From: James Jackson [mailto:[log in to unmask]]
Sent: Friday, July 23, 2004 4:33 PM
To: (Designers Council Forum); Kowalewski, Andy
Subject: Re: [DC] Inches vs Metric
All I want to know is ...
Where do I get 'Metric' sized paper for my 'American Units' Printer, so
I
can go 100% Metric, and print my Schematics on Metris paper? Hmmmmm???
Regards,
James Jackson
----- Original Message -----
From: "Kowalewski, Andy" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, July 23, 2004 3:54 PM
Subject: Re: [DC] Inches vs Metric
Let me get up on my well-known soapbox:
Go with the metric units if you have an option. We will all have to do
that sooner or later, and sooner is better.
Preach the gospel to anyone who will listen - it's a whole lot better
once you break through the pain barrier :-)
Andy K.
Sychip Inc
Office (972) 202 8852
-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of
Scott Riley
Sent: Friday, July 23, 2004 3:50 PM
To: [log in to unmask]
Subject: [DC] Inches vs Metric
This is something that will never go away. I used to work at a company
with
a standard that all drawings were to be dimensioned in MM. All our
designs
were done in microns, but the engineers all spoke in "mils". It made
for
interesting design reviews, but you eventually get used to it.
One of the first things I ask a new customer is what units they prefer.
If
it's inch I use line widths/spaces of 0.005, 0.010, etc. If they want
metric
I use 0.125, 0.25, etc. It's interesting to see how much "metric data" I
received with values of 0.381, 0.254, 0.762, 1.016.
Personally I prefer metric, but still buy beer buy the pint :)
Scott D. Riley
Technical Design Service
607-658-9322 - Office
607-785-1696 - FAX
<http://www.techdesignservice.com/> www.techdesignservice.com
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