Andy,


>I've seen a number of PC apps that set the PC clock by connecting to an
>atomic time standard, either directly-dialed or via the net.

>Suggestions for alternative schemes to keep an accurate clock over long
>periods would also be welcome.



Use of the cheapest available GPS unit with a serial interface will meet
your need. Needs only be powered up occasionally if power is a problem. Note
that it will require some minutes to acquire a full constellation of
satellites but time may be accurate before then).




      Russell McMahon
_____________________________

>From other worlds - www.easttimor.com
                                www.sudan.com

What can one man* do?
Help the hungry at no cost to yourself!
at  http://www.thehungersite.com/

(* - or woman, child or internet enabled intelligent entity :-))