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  2. Quartz clock - Wikipedia

    en.wikipedia.org/wiki/Quartz_clock

    Standard-quality 32 768 Hz resonators of this type are warranted to have a long-term accuracy of about six parts per million (0.0006%) at 31 °C (87.8 °F): that is, a typical quartz clock or wristwatch will gain or lose 15 seconds per 30 days (within a normal temperature range of 5 to 35 °C or 41 to 95 °F) or less than a half second clock ...

  3. Crystal oscillator frequencies - Wikipedia

    en.wikipedia.org/wiki/Crystal_oscillator_frequencies

    Real-time clock, quartz watches and clocks; also the DCF77 frequency 0.100000 10 5 allows decade division to 1 Hz and 1 kHz. Real-time clock, quartz watches and clocks, DMM dual slope ADCs (suppresses 50 Hz noise) 0.120000 DMM dual slope ADCs (suppresses 60 Hz noise) 0.131072 2 17 allows binary division to 1 Hz and 32.768 kHz.

  4. Crystal oscillator - Wikipedia

    en.wikipedia.org/wiki/Crystal_oscillator

    A crystal oscillator is an electronic oscillator circuit that uses a piezoelectric crystal as a frequency-selective element. [1] [2] [3] The oscillator frequency is often used to keep track of time, as in quartz wristwatches, to provide a stable clock signal for digital integrated circuits, and to stabilize frequencies for radio transmitters and receivers.

  5. Seiko - Wikipedia

    en.wikipedia.org/wiki/Seiko

    Seiko quickly developed quartz technology in preparation for the 1964 Tokyo Olympics, and in 1963 launched the Seiko Crystal Chronometer, a dramatically smaller version of its previous quartz clock. The quartz clock Seiko had supplied to a broadcasting station in 1959 was about the size of a wardrobe, but this new product ran on two batteries ...

  6. Astron (wristwatch) - Wikipedia

    en.wikipedia.org/wiki/Astron_(wristwatch)

    Quartz Movement of the Seiko Astron, 1969 (Deutsches Uhrenmuseum, Inv. Inv. 2010-006) The Astron wristwatch, formally known as the Seiko Quartz-Astron 35SQ, was the world's first "quartz clock" wristwatch. It is now registered on the List of IEEE Milestones as a key advance in electrical engineering.

  7. Microelectromechanical system oscillator - Wikipedia

    en.wikipedia.org/wiki/Microelectromechanical...

    MEMS clock generators are MEMS timing devices with multiple outputs for systems that need more than a single reference frequency. MEMS oscillators are a valid alternative to older, more established quartz crystal oscillators, offering better resilience against vibration and mechanical shock, and reliability with respect to temperature variation.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Lavet-type stepping motor - Wikipedia

    en.wikipedia.org/wiki/Lavet-type_stepping_motor

    Lavet-type stepping motor of a quartz clock. A black rotor sprocket provides the mechanical output. The Lavet-type stepping motor has widespread use as a drive in electro-mechanical clocks [1] and is a special kind of single-phase stepping motor. Both analog and stepped-movement quartz clocks use the Lavet-type stepping motor (see Quartz clock).

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