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Real-time clock, a computer clock that keeps track of the current time Real-time Control System , a reference model architecture suitable for software-intensive, real-time computing Real-time Programming Language , a compiled database programming language which expresses work to be done by a particular time
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 .
Real-time clocks are electronic devices designed to provide system time, and thereby wall-clock time, to a computer system. (Contrast this with clock signals , designed to provide timing for electronics themselves.)
Before the adoption of four standard time zones for the continental United States, many towns and cities set their clocks to noon when the sun passed their local meridian, pre-corrected for the equation of time on the date of observation, to form local mean solar time. Noon occurred at different times but time differences between distant ...
The Lukens clock remained in Independence Hall until 1877. [14] The acquisition of the original clock and bell by the Pennsylvania Colonial Assembly is closely related to the acquisition of the Liberty Bell. By mid-1753, the clock had been installed in the State House attic, but it was six years before Thomas Stretch received any pay for it. [15]
Real Time Clock Upgrades One unique solution found prominence. While other fixes worked at the BIOS level as TSRs (Terminate and Stay Resident), intercepting BIOS calls, Y2000RTC was the only product that worked as a device driver and replaced the functionality of the faulty RTC with a compliant equivalent.
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Daylight saving time (DST), also referred to as daylight saving(s), daylight savings time, daylight time (United States and Canada), or summer time (United Kingdom, European Union, and others), is the practice of advancing clocks to make better use of the longer daylight available during summer so that darkness falls at a later clock time.