enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Electric clock - Wikipedia

    en.wikipedia.org/wiki/Electric_clock

    This was the mechanism used in the first electric clocks, and is found in antique electric pendulum clocks. It is also found in a few modern decorative mantel and desk clocks. Synchronous clocks These rely on the 50 or 60 Hz utility frequency of the AC electric power grid as a timing source, by driving the clock gears with a synchronous motor ...

  3. Clock - Wikipedia

    en.wikipedia.org/wiki/Clock

    Early clock dials did not indicate minutes and seconds. A clock with a dial indicating minutes was illustrated in a 1475 manuscript by Paulus Almanus, [48] and some 15th-century clocks in Germany indicated minutes and seconds. [49] An early record of a seconds hand on a clock dates back to about 1560 on a clock now in the Fremersdorf collection.

  4. 2-Step Verification with a Security Key - AOL Help

    help.aol.com/articles/2-step-verification-with-a...

    If you no longer have your Security Key, use these steps: Go to the Sign-In Helper. Sign in and go to the AOL Account Security page. Turn off Security Key 2-Step Verification. When you get your Security Key back or get a new key, you can re-enable 2-Step Verification in your Account Security settings.

  5. Watchclock - Wikipedia

    en.wikipedia.org/wiki/Watchclock

    The paper disk or tape had the times pre-printed and the key impressed the key number on the corresponding time. After the shift (or a specified time period, up to 96 hours in the case of the Detex Guardsman clocks), an authorized person (usually a supervisor), would unlock the watchclock and retrieve the disk or tape and insert a new one.

  6. Alarm clock - Wikipedia

    en.wikipedia.org/wiki/Alarm_clock

    This is an accepted version of this page This is the latest accepted revision, reviewed on 25 February 2025. Type of clock A traditional wind-up (key-wound), mechanical spring-powered alarm clock An alarm clock or alarm is a clock that is designed to alert an individual or group of people at a specified time. The primary function of these clocks is to awaken people from their night's sleep or ...

  7. Telechron - Wikipedia

    en.wikipedia.org/wiki/Telechron

    Telechron—now the "Clock and Timer Division" of GE—declined in the 1950s, mainly because batteries had become much more long-lived and reliable. Battery-powered clocks have the obvious advantage of not depending on the proximity of a power outlet, and do not require the often somewhat unattractive electric cable.

  8. Clockwork - Wikipedia

    en.wikipedia.org/wiki/Clockwork

    Other uses, most but not all obsolete, include: Wind-up toys – often as a simple mechanical motor, or to create automata. These may be either key-wound, as were many 20th-century model trains, or a simpler pullback motor. Most photographic camera leaf shutters use a clockwork mechanism not unlike that of wristwatches to time the opening and ...

  9. 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).