Messages in this thread |  | | Subject | Re: Why touch the CMOS clock? | From | Mark Eichin <> | Date | 15 May 1996 23:47:50 -0400 |
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> RTC doesn't drift quite that much when the system is off, but it does > drift enough that I have to check the clock if I have the system off for
The RTC is driven by a crystal. Crystals are temperature change sensitive; I think the temperature sensitivity is quadratic. Look in ftp.udel.edu pub/ntp (ie. along with the ntp sources) for the time-surveying paper and figures -- an MIT thesis project on clock quality and synchronization came up with a lot of interesting things about the real world properties of clocks.
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