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  2. Digital clock - Wikipedia

    en.wikipedia.org/wiki/Digital_clock

    Digital clocks typically use the 50 or 60 hertz oscillation of AC power or a 32,768 hertz crystal oscillator as in a quartz clock to keep time. Most digital clocks display the hour of the day in 24-hour format; in the United States and a few other countries, a commonly used hour sequence option is 12-hour format (with some indication of AM or PM).

  3. Sony Dream Machine - Wikipedia

    en.wikipedia.org/wiki/Sony_Dream_Machine

    An FM/AM digital clock radio with a cube dimension of 4.5 inches all around. It was Probably an older generation of CXW family digital radio with more improved features like DREAM BAR on the top panel and a 9-volt battery backup at the bottom panel like C317. It must be the first model in the CXW family with the backup battery feature since it ...

  4. Spartus - Wikipedia

    en.wikipedia.org/wiki/Spartus

    Founded as the Utility Manufacturing Company in 1934, it produced a wide variety of products, including wall clocks, alarm clocks, electric shavers, analog cameras, and more. It sold these through a medley of brands—including Falcon, Spartus, Galter, Regal, Monarch, Spencer, among others. It was founded in 1934 by Jack Galter (1904–1993) as ...

  5. Telechron - Wikipedia

    en.wikipedia.org/wiki/Telechron

    Just as a clock like the "Administrator" (designed by Leo Ivan Bruce) reflected thirties aesthetics, so the "Dimension" had 1950s lines. Telechrons were relatively expensive compared to other clocks. In 1941, their most inexpensive alarm clock was the model 7H117 "Reporter," and it sold for $2.95, the equivalent of $30.00 in 2008 funds.

  6. Electric clock - Wikipedia

    en.wikipedia.org/wiki/Electric_clock

    While the actual frequency may vary with loading on the grid, the total number of cycles per 24 hours is maintained rigorously constant, so that these clocks can keep time accurately for long periods, barring power cuts; over months they are more accurate than a typical quartz clock. This was the most common type of clock from the 1930s but has ...

  7. Flip clock - Wikipedia

    en.wikipedia.org/wiki/Flip_clock

    A flip clock (also known as a "flap clock") is an electromechanical, digital time keeping device with the time indicated by numbers that are sequentially revealed by a split-flap display. The study, collection and repair of flip clocks is termed horopalettology (from horology – the study and measurement of time and palette – and the Italian ...

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