In article ,
Clive Page wrote:
So it is disappointing to find that car clocks, mine among them, are out
by a minute or two a month. I think it's partly the car environment -
wide temperature variations make it hard to get a quartz crystal to keep
time. The car companies know that it's difficult to get accuracy
without a lot of expense, so they don't even try, they buy the cheapest
crystals then can get and don't bother to trim them.

On the other hand, most cars now have a sat-nav system so it would be
easy to link them to reset the dashboard clock to GPS time at intervals,
but that would cost a few pence more per car during manufacture. Since
few of us decide against buying a new model of car because it has a
poorly designed clock circuit, the problem will persist.

I'd say GPS not necessarily the best way on a cheap car. But most cars
have a radio and that carries a time signal.

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*WHY IS THERE AN EXPIRATION DATE ON SOUR CREAM?

Dave Plowman London SW
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