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Erschienen in:
1977 | OriginalPaper | Buchkapitel
Introduction
verfasst von : L. F. Lind, J. C. C. Nelson
Erschienen in: Analysis and Design of Sequential Digital Systems
Verlag: Macmillan Education UK
Enthalten in: Professional Book Archive
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Digital systems are not new. The simple ‘on-off’ signalling techniques used by nineteenth-century telegraphers are one example of an early application of digital techniques. However, for many years development of the various applications of digital principles continued virtually independently; construction of electromechanical telephone exchanges, for example, progressed quite independently of the development of digital computing systems.