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  2. History of timekeeping devices - Wikipedia

    en.wikipedia.org/wiki/History_of_timekeeping_devices

    The Shortt–Synchronome clock, an electrical driven pendulum clock designed in 1921, was the first clock to be a more accurate timekeeper than the Earth itself. [167] A succession of innovations and discoveries led to the invention of the modern quartz timer. The vacuum tube oscillator was invented in 1912. [168]

  3. Time clock - Wikipedia

    en.wikipedia.org/wiki/Time_clock

    Time clock. A time clock, sometimes known as a clock card machine, punch clock, or time recorder, is a device that records start and end times for hourly employees (or those on flexi-time) at a place of business. In mechanical time clocks, this was accomplished by inserting a heavy paper card, called a time card, into a slot on the time clock.

  4. Real-time clock - Wikipedia

    en.wikipedia.org/wiki/Real-time_clock

    A real-time clock ( RTC) is an electronic device (most often in the form of an integrated circuit) that measures the passage of time. Although the term often refers to the devices in personal computers, servers and embedded systems, RTCs are present in almost any electronic device which needs to keep accurate time of day .

  5. 8 Best Sunrise Alarm Clocks to Rise and Shine with - Healthline

    www.healthline.com/.../8-great-sunrise-alarm-clocks

    Philips SmartSleep Wake-Up Light, HF3520/60. Price: $$. This less expensive offering from Philips gives you the exact same sunrise and sunset simulator functions, but it doesn’t include the ...

  6. Peter Henlein - Wikipedia

    en.wikipedia.org/wiki/Peter_Henlein

    Peter Henlein (also spelled Henle or Hele) [1] (1485 - August 1542), a locksmith and clockmaker of Nuremberg, Germany, is often considered the inventor of the watch. [2] [3] He was one of the first craftsmen to make small ornamental portable clocks which were often worn as pendants or attached to clothing, [4] and which are regarded as the ...

  7. Electric Time Company - Wikipedia

    en.wikipedia.org/wiki/Electric_Time_Company

    Electric Time Company was founded in 1928 and incorporated in the state of Massachusetts in 1932. It was founded by a salesman for the Self Winding Clock Company and Telechron of Ashland, Massachusetts. Originally part of Telechron it progressed from an office in Boston, Massachusetts to manufacturing facilities in Wellesley, Massachusetts ...

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