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A time switch (also called a timer switch, or simply timer) is a device that operates an electric switch controlled by a timer. Intermatic introduced its first time switch in 1945, which was used for "electric signs, store window lighting, apartment hall lights, stokers, and oil and gas burners." A consumer version was added in 1952.
Intermatic Incorporated is an American manufacturer of time switches headquartered in Spring Grove, Illinois. Intermatic was founded in 1891 in Chicago, Illinois as the International Register Company to produce fare registers .
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.
The popularity of Day-Timer was of the level that early PC personal information manager (PIM) applications such as Borland Sidekick could print out appointment pages in Day-Timer format, for physical insertion into a Day-Timer book. [15] Early on there was a collaboration with Lotus 1-2-3 that did not work out. [10]
The Intel 8253 PIT was the original timing device used on IBM PC compatibles.It used a 1.193182 MHz clock signal (one third of the color burst frequency used by NTSC, one twelfth of the system clock crystal oscillator, [1] therefore one quarter of the 4.77 MHz CPU clock) and contains three timers.
This may occur at the same or different rates from the passage of time in the real world. For example, in Terraria, one day-night cycle of 24 hours in the game is equal to 24 minutes in the real world. [1] In a multiplayer real-time game, players perform actions simultaneously as opposed to in sequential units or turns.
Most traditional egg timers have a set time of about three minutes, that being the approximate time it takes to cook an average sized hen's egg in water. Hard-boiled eggs take longer to cook. The three minute egg timer is for soft-boiled eggs. [4] The egg changes rapidly during the first few minutes of cooking.
A watchdog timer (WDT, or simply a watchdog), sometimes called a computer operating properly timer (COP timer), [1] is an electronic or software timer that is used to detect and recover from computer malfunctions. Watchdog timers are widely used in computers to facilitate automatic correction of temporary hardware faults, and to prevent errant ...