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  2. Time clock - Wikipedia

    en.wikipedia.org/wiki/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.

  3. Clock network - Wikipedia

    en.wikipedia.org/wiki/Clock_network

    The master clock in a clock network can receive accurate time in a number of ways: through the United States GPS satellite constellation, a Network Time Protocol server, the CDMA cellular phone network, a modem connection to a time source, or by listening to radio transmissions from WWV or WWVH, or a special signal from an upstream broadcast network.

  4. Time and attendance - Wikipedia

    en.wikipedia.org/wiki/Time_and_attendance

    Traditionally manual systems were used that rely on paper cards which have times stamped onto them using a time stamping machine.Such machines were used for over a century but have since been phased out and replaced with cheaper automated systems which eliminate the need for payroll staff to manually input employee hours.

  5. History of timekeeping devices - Wikipedia

    en.wikipedia.org/wiki/History_of_timekeeping_devices

    A sophisticated water-powered astronomical clock was described by Al-Jazari in his treatise on machines, written in 1206. [46] This castle clock was about 11 feet (3.4 m) high. [ 47 ] In 1235, a water-powered clock that "announced the appointed hours of prayer and the time both by day and by night" stood in the entrance hall of the Mustansiriya ...

  6. Slave clock - Wikipedia

    en.wikipedia.org/wiki/Slave_clock

    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 clock that depends on another clock, the master clock.

  7. Talking clock - Wikipedia

    en.wikipedia.org/wiki/Talking_clock

    A talking clock (also called a speaking clock and an auditory clock) is a timekeeping device that presents the time as sounds. It may present the time solely as sounds, such as a phone-based time service (see " Speaking clock ") or a clock for the visually impaired, or may have a sound feature in addition to an analog or digital face.

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