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[Richard A. Franklin]

Jonathan Hutchins wrote:

>On Tuesday 18 November 2003 08:09 am, Dave Hull wrote:
>
>
>
>>Why are computer clocks so good at gaining/losing time?
>>
>>
>
>There's gotta be a FAQ on that somewhere, but basically it's because they were
>never designed to keep absolute time, just "relative" time.  They provide the
>metronome beat that the system runs by and make it possible to tell a "new"
>file from an "older" file.  The original P's didn't even store time when you
>shut them off, you had to set it at each startup.  There were piggyback chips
>you could put over the BIOS that had an internal clock and battery, and
>that's when people started expecting their PC to know what time it really
>was.
>
>
http://www.linux.se/doc/HOWTO/mini/Clock-1.html

The info on this page seemed relevant.