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Why aren't computer clocks as accurate as cheap quartz watches?
Watches have an internal capacitor to adjust for each
crystal. I have never seen that capacitor on motherboards since (I believe it was) the IBM AT. Furthermore, the PC clock operates at two significantly different voltages that will change crystal frequency. Battery voltage and voltage when PC is powered will cause additional fluctuation. Which voltage should they adjust the capacitor to? Just easier to not install and adjust the capacitor. wrote: I'm looking for a techical explanation. |
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