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基本説明
An attempt to tell how communications have evolved from the time c500BC, when fire beacons were used for signalling, to the 1940s when high definition television systems were being established in some countries for the entertainment, education, etc.
Full Description
Neither a descriptive chronicle of dates, nor a catalogue of devices and systems, this volume uncovers the decisive factors including the technical, political, social and economic, that have enabled modern communications to evolve from early primitive stages of development.



