quartz talking watch
What vibrates on a digital clock to make it work?
I need to know what vibrates in a clock to make it move, I think it's quartz but I need more information. Anyone who can provide me a direct link to the page of a page you're talking about the digital and quartz watches, you get 10 points
There is a small 32.768KHz quartz crystal that determines the frequency. Usually in the form of a small metal cylinder: http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=X801-ND http://www.wrighthobbies.net/examples/RTCcrystal1. jpg Now, even the economic analogue watches the dollar store are actually digital watches. Take a besides, there are very few arts, a chip under a plastic bubble and a quartz crystal 32.768KHz. That in turn drives a small motor that moves the hands, with the handling the gear ratio between the second minute, and hands an hour. If you carry a spare battery, has the same thing. Http: / / en.wikipedia.org / wiki / Quartz_clock 32.768KHz http://www.explainthatstuff.com/quartzclockwatch.html is used because it is easily divided by powers of two to 1Hz. 32.768KHz / 2 ^ 15 = 1Hz This quartz crystal in a watch or clock is often referred to as a "tuning fork" but that is only an analogy, not literally a small tuning fork, but a piece of quartz that vibrates at its natural resonant frequency through the piezoelectric effect. In a digital clock that 1Hz (one per second) oscillator drives a series of counters to keep track of the time. In the clocks stop the frequency can be divided to only 100Hz or 1000Hz in order to keep the time of 1/100th or 1/1000th of a second. Table clocks or any clock that plugs can be used a higher frequency crystal. Low frequency crystal means less power, so use wristwatches 32.768KHz crystals, as a rule. http://www.howstuffworks.com/digital-clock.htm
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Ladies' Gold Four Button Talking Time and Alarm Watch
$49.95 This beautifully designed Ladies Golden Quartz Analog Talking Watch has a time and alarm announcement with a clear, male voice. Golden case with golden dial and golden hands. Golden expansion band. Modern watch design. Features: hourly audio announcement and alarm with three different sounds. Watch Face Size: 1 Inch. #7022134... |
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Ladies Classic Tel Time Chrome Talking Watch with White Dial Chrome Bracelet Band
$29.95 Classic Ladies Quartz Analog Talking Watch that has a time and alarm announcement with a clear male voice Chrome case with a white dial and black 1 12 numbers Chrome bracelet band Features hourly audio announcement alarm with three different sounds and large easy to see numbers Batteries included Dial Size 1 1 4... |
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Ladies' Gold Four Button Talking Time and Alarm Watch
$39.95 A beautifully designed Gold Colored Ladies Quartz Analog Talking Watch that has a time and alarm announcement with a clear voice. Golden case with a white dial and black numbers. Golden expansion band. Modern watch design. Features: hourly audio announcement and alarm with three different sounds. Watch Face size: 1". #312202... |
