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  2. Quartz clock - Wikipedia

    en.wikipedia.org/wiki/Quartz_clock

    Developing quartz clocks for the consumer market took place during the 1960s. One of the first successes was a portable quartz clock called the Seiko Crystal Chronometer QC-951. This portable clock was used as a backup timer for marathon events in the 1964 Summer Olympics in Tokyo. [46]

  3. Sessions Clock - Wikipedia

    en.wikipedia.org/wiki/Sessions_Clock

    Within a few years the Sessions Clock Company was producing clock movements, cases, dials, artwork and castings for their line of mechanical clocks. Between 1903 and 1933 Sessions produced 52 models of mechanical clocks, ranging from Advertisers, large and small clocks with logos of various businesses, to wall, or regulator clocks, and shelf or ...

  4. Slave clock - Wikipedia

    en.wikipedia.org/wiki/Slave_clock

    In addition to wall clocks, it also controls time stamps that are used to stamp documents with the time, and a turret clock used in a clock tower. The "program clock" is a timer that can be programmed with punched paper tape to ring bells or turn machines on and off at preprogrammed times. In telecommunication and horology, a slave clock is a ...

  5. Clock - Wikipedia

    en.wikipedia.org/wiki/Clock

    A common misconception is that a digital clock is more accurate than an analog wall clock, but the indicator type is separate and apart from the accuracy of the timing source. Talking clocks and the speaking clock services provided by telephone companies speak the time audibly, using either recorded or digitally synthesized voices .

  6. Lux Products - Wikipedia

    en.wikipedia.org/wiki/Lux_Products

    In the years that followed, the company grew and began making the entire clock unit. Lux Clock produced clocks until 1941, at which time they made war related products. Clock production resumed after the war, and in 1954 a plant was established in Lebanon, Tennessee. By 1959 a Lux Time Ltd. facility was built in Ontario, Canada.

  7. Radio clock - Wikipedia

    en.wikipedia.org/wiki/Radio_clock

    A modern LF radio-controlled clock. A radio clock or radio-controlled clock (RCC), and often colloquially (and incorrectly [1]) referred to as an "atomic clock", is a type of quartz clock or watch that is automatically synchronized to a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock.