Download Digital Communication: Communication, Multimedia, Security by Christoph Meinel, Harald Sack PDF

By Christoph Meinel, Harald Sack

The authors provide a close precis concerning the basics and the historic history of electronic verbal exchange. This contains an outline of the encoding rules and algorithms of textual info, audio details, in addition to photos, images, and video within the net. moreover the basics of laptop networking, electronic protection and cryptography are lined. hence, the booklet presents a well-founded entry to communique know-how of laptop networks, the net and the WWW. various images and pictures, a subject-index and a close record of historic personalities together with a thesaurus for every bankruptcy bring up the sensible advantage of this ebook that's like minded in addition to for undergraduate scholars as for operating practitioners.

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The regular conveyance of messages was inseparable with the expanding traffic and transport systems. Without traffic there was no flow of messages and with traffic there was not only the need to exchange goods over great distances but also the latest news. Even before the Roman Empire’s massive road network system in the European Bronze Age, the so-called Amber Road existed between Italy and Denmark via Austria. In China caravans transported precious goods along the route of the Silk Road, from China’s Middle Kingdom to the West.

Fig. 6 A brief history of the library. 27 28 2 Historical Overview The decisive step in the evolution of writing materials – up to the point where they became a cheap, simple medium that could be produced in large quantities – was bridged by the Chinese with the invention of paper. This event occurred in about 105 AD at the time of the eastern Han Dynasty. In the year 794 the first paper mill in the Arabic world began its operation Thus paper reached Egypt at the end of the eighth century and quickly pushed out papyrus, which had been used for thousands of years.

These topics included exorcisms, comets, people with birth defects or heretics. The leaflet is considered the first means of mass communication. The irregularly published pamphlet is the direct predecessor of our daily newspaper. In contrast to a leaflet, a pamphlets consists of several printed pages. “ Used in the vicinity of Cologne, it describe oral and written messages. On December 4, 1501, the so-called “Newe Zeitung“ appeared as the title of a transcribed and Germanized report from Doge Leonhard Lauredan (1459–1516).

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