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The history of telecommunication began with the use of smoke signals and drums in Africa, Asia, and the Americas. In the 1790s, the first fixed semaphore systems emerged in Europe. However, it was not until the 1830s that electrical telecommunication systems started to appear. This article details the history of telecommunication and the ...
[49] [50] WDM subsequently became the common basis of all telecommunications networks [51] and a foundation of the Internet. [52] 1997 – SixDegrees.com is launched, the first of several early social networking services. 1998 – Google, an advanced search engine, is launched. [53] 1999 – Napster peer-to-peer file sharing is launched. [36]
Long-distance technologies invented during the 20th and 21st centuries generally use electric power, and include the telegraph, telephone, television, and radio. Early telecommunication networks used metal wires as the medium for transmitting signals. These networks were used for telegraphy and telephony for many decades.
Telecommunication of the 21st century has been dominated by the development of the smartphone. This is a combination of a hand-held computer, a cellular phone, a digital camera, and Internet access. One of its features is the touch screen that facilitates the primary interaction for users for most tasks, such as dialing telephone numbers.
19 February 1880: The photophone, also called a radiophone, is invented jointly by Alexander Graham Bell and Charles Sumner Tainter at Bell's Volta Laboratory. [18] [19] The device allowed for the transmission of sound on a beam of light. 20 March 1880: National Bell Telephone merges with others to form the American Bell Telephone Company.
The history of telecommunication including radio, telegraphy, television, telephony, data communication and computer networking. Subcategories This category has the following 27 subcategories, out of 27 total.
The origin of language, its relationship with human evolution, and its consequences have been subjects of study for centuries.Scholars wishing to study the origins of language draw inferences from evidence such as the fossil record, archaeological evidence, contemporary language diversity, studies of language acquisition, and comparisons between human language and systems of animal ...
A retired director general of the Telecom Italia central telecommunications research institute , Basilio Catania, [10] and the Italian Society of Electrotechnics, "Federazione Italiana di Elettrotecnica", have devoted a Museum to Antonio Meucci, constructing a chronology of his invention of the telephone and tracing the history of the two legal ...