32768 / 2^14 = 1
Clock "adjustment": 32768 / 2^15 = 1
Also, low frequency crystals require significantly less power to oscilate, which is a handy thing when operating small battery-powered devices such as RTC chips or wristwatches.
I once heard somewhere that a specific natural occuring shape of crystal would oscillate at exactly 32.768 khz. Don't know if this holds any truth though
First quartz controlled wrist watch at 8192Hz in 1969:
Quote from: afremont on Apr 12, 2013, 10:50 pmFirst quartz controlled wrist watch at 8192Hz in 1969:And cost as much as a Toyota Corolla at the time! Yikes!
... is $1,700 USD, we have $550 USD gaps.
First quartz controlled wrist watch at 8192Hz in 1969:http://en.wikipedia.org/wiki/Astron_%28wristwatch%29Analog dial and hands.
The Astron was accurate to ±5 seconds per month, or one minute per year.