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1000 B.C. - 0 900 B.C. A postal service is used for governmental purposes in China. 500 B.C. In ancient Greece trumpets, drums, shouting, beacon, fires, smoke signals, and mirrors are used for message transmission. 4th century B.C. Aeneas Tacitus, a Greek military scientist and cryptographer, invented an optical communication system that combines water and beacon telegraphy. Torches indicated the beginnings and the ends of a message transmission while water jars were used to transmit the messages. These jars had a plugged standard-size hole drilled on the bottom side and were filled with water. As those who sent and those who received the message unplugged the jars simultaneously, the water drained out. Because the transmitted messages corresponded to water levels, the sender indicated by a torch signal that the appropriate water level had been reached. The methods disadvantage was that the possible messages were restricted to a given code, but as the system was mainly used for military purposes, this was offset by the advantage that it was almost impossible for outsiders to understand the messages unless they possessed the codebook. With communication separated from transportation, the distant became near. Tacitus' telegraph system was very fast and not excelled until For further information see Joanne Chang & Anna Soellner, Decoding Device, 3rd century B.C. Wax tablets are used as writing material in Mesopotamia, ancient Greece, and Etruria. 2nd century B.C. In China paper is invented. 1st century B.C. The use of codices instead of scrolls - basically the hardcover book as we know it today - is an essential event in European history. To quote accurately by page number, to browse through pages and to skip chapters - things that were impossible when reading scrolls - becomes possible. In the computer age we are witnesses to a kind of revival of the scrolls as we scroll up and down a document. The introduction of hypertext possibly marks the beginning of a similar change as has taken place with the substitution of scrolls with codices. |
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Global Networks Although the Internet has become ubiquitous, hardly anybody has a clear picture of its economic, political and technical hierarchies. Understanding this major technological development enables to gain an idea of the socio-economic powers structuring the Internet. World-Information.Org investigates the common legend that the Internet is highly decentralized and diversified and therefore not easily controllable and provides an assessment of the architectural properties of this network. It aims at making transparent the Related search: |
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Internet services The Internet can be used in in different ways: for distributing and retrieving information, for one-to-one, one-to-many and many-to-many communication, and for the access services. Accordingly, there are different services on offer. The most important of these are listed below. |
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Kessler Marketing Intelligence (KMI) KMI is the leading source for information on fiber-optics markets. It offers market research, strategic analysis and product planning services to the opto-electronics and communications industries. KMI tracks the worldwide fiber-optic cable system and sells the findings to the industry. KMI says that every fiber-optics corporation with a need for strategic market planning is a subscriber to their services. |
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Digital Subscriber Line (DSL) DSL connections are high-speed data connections over copper wire telephone lines. As with cable connections, with DSL you can look up information on the Internet and make a phone call at the same time but you do not need to have a new or additional cable or line installed. One of the most prominent DSL services is ISDN (integrated services digital network, for more information click here ( |
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Java Applets Java applets are small programs that can be sent along with a Web page to a user. Java applets can perform interactive animations, immediate calculations, or other simple tasks without having to send a user request back to the server. They are written in Java, a platform-independent computer language, which was invented by Source: Whatis.com |
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The World Wide Web History Project The ongoing World Wide Web History Project was established to record and publish the history of the World Wide Web and its roots in hypermedia and networking. As primary research methods are used archival research and the analysis of interviews and talks with pioneers of the http://www.webhistory.org/home.html |
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Server A server is program, not a computer, as it sometimes said, dedicated to store files, manage printers and network traffic, or process database queries. Web sites, the nodes of the |
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Internet Software Consortium The Internet Software Consortium (ISC) is a nonprofit corporation dedicated to the production of high-quality reference implementations of Internet standards that meet production standards. Its goal is to ensure that those reference implementations are properly supported and made freely available to the Internet community. http://www.isc.org |
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International Cable Protection Committee (ICPC) The ICPC aims at reducing the number of incidents of damages to submarine telecommunications cables by hazards. The Committee also serves as a forum for the exchange of technical and legal information pertaining to submarine cable protection methods and programs and funds projects and programs, which are beneficial for the protection of submarine cables. Membership is restricted to authorities (governmental administrations or commercial companies) owning or operating submarine telecommunications cables. As of May 1999, 67 members representing 38 nations were members. http://www.iscpc.org |
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