Time Keeping Systems

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Sampled data systems - Sampled-data systems is a control system where the continuous-­time plant is controlled with a digital device. Under periodic sampling, the sampled­-data system is time-­varying but also periodic, and thus it may be modeled by a simplified discrete-­time system obtained by discretizing the plant.

Unix time - Unix time, or POSIX time, is a system for describing points in time. It is widely used not only on Unix-like operating systems but in many other computing systems, including the Java programming language.

Time transfer - Time transfer describes methods for transferring reference clock synchronization from one point to another, often over long distances. Radio-based navigation systems are frequently used as time transfer systems.

Station keeping - Station keeping is the practice of maintaining the orbital position of satellites in geostationary orbit. Automatic and Earth-station systems monitor and maintain a satellite's position with telemetry instrumentation and on-board thruster systems.

Suggested Web Sites

Real-Time Systems: The International Journal of Time-Critical Computing Systems - Real-Time Systems: The International Journal of Time-Critical Computing Systems Quarterly, available electronically via Kluwer Online.

Express Time Systems - Express Time Systems Sales and support of employee time clocks and time recording equipment. Offering time and attendance systems from Acroprint, Amano Cincinnati, Time America, and Recognition Systems. USA

Isgus Time Management Systems - Isgus Time Management Systems Specialist supplier of time and attendance systems, clock machines and computer software to run the systems. Computerised time recorders and time clocks, as well as the latest Windows compatible system.

Source: BazSites.com

Web Links

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