In message <[EMAIL PROTECTED]>, "Andrew
 P. Lentvorski, Jr." writes:

>An $8.00 wristwatch has much better time accuracy that your multi-$100 PC.

That's because the crystal in your wristwatch is cut specially so that it
has a flat temp-co at about 23-16 C, whereas the xtal in your computer
is has a gradient all the way from 0 to 70 C.

See:
http://www.corningfrequency.com/library/vig/Vig-tutorial_files/frame.htm

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