[time-nuts] How to get 32.768KHz from 10MHz.
Mike S
mikes at flatsurface.com
Wed Jul 23 16:59:28 UTC 2008
At 11:56 AM 7/23/2008, Didier Juges wrote...
>Problem is one period of 32768 is not a multiple of 100nS (one period
>of 10 MHz) so that won't work.
As long as both periods are rational numbers, it doesn't matter, and it
can work. For this purpose (display for humans), it doesn't matter if
some seconds have 32768.xxx cycles and some have 32767.yyy, as long as
they average to exactly 32768. Being off by a whole lot less than the
time it takes an LCD segment to change contrast won't hurt anything.
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