Real-Time Systems: Design Principles for Distributed Embedded Applications
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H | B | T | Gramm
244 | 165 | 25 | 721
Erscheinungsjahr
1997
FSK
0
Ausgabe
Hardcover
Verlag
Springer
ISBN-10
0792398947
ISBN-13
9780792398943
Autor
Hermann Kopetz
Sprache
Englisch
Seitenanzahl
356
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gemäß Art. 16 GPSR
Buchpark GmbH, Krügerweg 1, 14959 Trebbin, Telefon: +4933817976585, E-Mail: info@buchpark.de
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Rabatt
Data, Information, and Time
This SpringerBrief presents the data- information-and-time (DIT) model that precisely clarifies the semantics behind the terms data, information and their relations to the passage of real time. According to the DIT model a data item is a symbol that appears as a pattern (e.g., visual, sound, gesture, or any bit pattern) in physical space. It is generated by a human or a machine in the current contextual situation and is linked to a concept in the human mind or a set of operations of a machine. An information item delivers the sense or the idea that a human mind extracts out of a given natural language proposition that contains meaningful data items. Since the given tangible, intangible and temporal context are part of the explanation of a data item, a change of context can have an effect on the meaning of data and the sense of a proposition. The DIT model provides a framework to show how the flow of time can change the truth-value of a proposition. This book compares our notions of data, information, and time in differing contexts: in human communication, in the operation of a computer system and in a biological system. In the final Section a few simple examples demonstrate how the lessons learned from the DIT-model can help to improve the design of a computer system.
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