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Default Why aren't computer clocks as accurate as cheap quartz watches?

Hi!

Not one single person has mentioned that their computer keeps great
time.


Okay then, I'll jump in here. I was just waiting for someone to say it.
:-)

I am a collector and operator of the IBM PS/2 line of computers. I have
a lot of them and most are powered up and running fairly often. Some
run 24/7 as servers.

The clocks on these things are--for the most part--extremely accurate.
I synchronize the clocks on my computers by way of the 'net to one of
the many network time protocol servers in the world. The
synchronization happens at least once a week, sometimes more often. I
don't think I've ever seen one drift more than a second or three
between synchronizations. Of course, it does depend upon the health of
the clock battery. Most people never changed them during the lives of
these computers...so they still run, but are rather weak. I usually
replace them immediately just to avoid a leaking episode.

You can also use these computers as rather large and heavy digital
clocks--they have a flourescent display panel near the power switch
that is normally used for power on self test codes. Fortunately, it is
is user/software-addressable and can be misused in a variety of fun
ways.

http://www.walshcomptech.com/ps2/images/server95big.jpg

The only bad thing about these is that these PS/2s make the clocks in
almost all of my other machines look like a sad joke. :-)

William