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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. In mechanical time clocks, this was accomplished by inserting a heavy paper card, called a time card, into a slot on the time clock.
In 1979, Kronos delivered the world's first microprocessor-based time clock and, in 1985, delivered its first PC-based time and attendance product. In 1992, Kronos became a publicly-traded company on NASDAQ. Aron Ain, succeeded his brother Mark Ain as chief executive officer in 2005. In March 2007, Kronos went private again, bought out for US$1 ...
Kronos is a series of 32-bit processor equipped printed circuit board systems, and the workstations based thereon, of a proprietary hardware architecture developed in the mid-1980s in Akademgorodok, a research city in Siberia, by the Academy of Sciences of the Soviet Union, Siberian branch, Novosibirsk Computing Center, Modular Asynchronous Developable Systems (MARS) project, Kronos Research ...
CDC Kronos. Kronos is an operating system with time-sharing capabilities, written by Control Data Corporation in 1971. [1] Kronos ran on the 60-bit CDC 6000 series mainframe computers and their successors. CDC replaced Kronos with the NOS operating system in the late 1970s, which were succeeded by the NOS/VE operating system in the mid-1980s.
Proper time. In relativity, proper time (from Latin, meaning own time) along a timelike world line is defined as the time as measured by a clock following that line. The proper time interval between two events on a world line is the change in proper time, which is independent of coordinates, and is a Lorentz scalar. [1]
Roman timekeeping. In Roman timekeeping, a day was divided into periods according to the available technology. Initially, the day was divided into two parts: the ante meridiem (before noon) and the post meridiem (after noon). With the advent of the sundial circa 263 BC, the period of the natural day from sunrise to sunset was divided into ...
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