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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 ...
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.
The laboratory was also the site where he and his associate invented his "proudest achievement", "the photophone", the "optical telephone" which presaged fibre optical telecommunications while the Volta Bureau would later evolve into the Alexander Graham Bell Association for the Deaf and Hard of Hearing (the AG Bell), a leading center for the ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 22 January 2025. Technical and legal issues surrounding the development of the modern telephone For broader coverage of this topic, see History of the telephone. Replica of Antonio Meucci's telettrofono Reis's telephone The invention of the telephone was the culmination of work done by more than one ...
[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]
Donald Davies (1924–2000) independently invented and named the concept of packet switching for data communications in 1965 at the United Kingdom's National Physical Laboratory (NPL). [ 16 ] [ 9 ] In the same year, he proposed a national commercial data network in the UK employing high-speed switching nodes.
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.