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  2. Stopwatch - Wikipedia

    en.wikipedia.org/wiki/Stopwatch

    A stopwatch is a timepiece designed to measure the amount of time that elapses between its activation and deactivation. A large digital version of a stopwatch designed for viewing at a distance, as in a sports stadium, is called a stop clock. In manual timing, the clock is started and stopped by a person pressing a button.

  3. Timer - Wikipedia

    en.wikipedia.org/wiki/Timer

    A typical kitchen timer. A timer or countdown timer is a type of clock that starts from a specified time duration and stops upon reaching 00:00. An example of a simple timer is an hourglass. Commonly, a timer triggers an alarm when it ends. A timer can be implemented through hardware or software.

  4. Complication (horology) - Wikipedia

    en.wikipedia.org/wiki/Complication_(horology)

    Chronograph, with a second hand that can be stopped and started to function as a stopwatch. Double chronograph or rattrapante, multiple second hands for split-second, lap timing or timing multiple events; Flyback chronograph, allowing rapid reset of the chronograph as it is running; Counter chronograph; Independent second-hand chronograph

  5. Timing diagram - Wikipedia

    en.wikipedia.org/wiki/Timing_diagram

    Timing diagram may refer to: Digital timing diagram; Timing diagram (Unified Modeling Language) Time–distance diagram This page was last edited on 7 ...

  6. Watch - Wikipedia

    en.wikipedia.org/wiki/Watch

    A chronograph is a watch with an added duration timer, often a stopwatch complication (as explained above), while a chronometer watch is a timepiece that has met an industry-standard test for performance under pre-defined conditions: a chronometer is a high quality mechanical or a thermo-compensated movement that has been tested and certified ...

  7. Talk:Stopwatch - Wikipedia

    en.wikipedia.org/wiki/Talk:Stopwatch

    In manual timing, the clock is started and stopped by a person pressing a button. In fully automatic time, both starting and stopping are triggered automatically, by sensors. large digital version of a stopwatch designed for viewing at a distance, as in a sports stadium, is called a stop clock.

  8. Mechanical watch - Wikipedia

    en.wikipedia.org/wiki/Mechanical_watch

    The hand-winding movement of a Russian watch. A mechanical watch is a watch that uses a clockwork mechanism to measure the passage of time, as opposed to quartz watches which function using the vibration modes of a piezoelectric quartz tuning fork, or radio watches, which are quartz watches synchronized to an atomic clock via radio waves.

  9. 555 timer IC - Wikipedia

    en.wikipedia.org/wiki/555_timer_IC

    The internal block diagram and schematic of the 555 timer are highlighted with the same color across all three drawings to clarify how the chip is implemented: [2] Voltage divider : Between the positive supply voltage V CC and the ground GND is a voltage divider consisting of three identical resistors (5 kΩ for bipolar timers, 100 kΩ or ...