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The history of telecommunication - the transmission of signals over a distance for the purpose of communication - began thousands of years ago with the use of smoke signals and drums in Africa, America and parts of Asia. 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. Timeline of communication tools, 2014 update..jpg Distance telecommunications[edit] Visual, auditory and ancillary methods (non-electrical): Prehistoric: Fires, Beacons, Smoke signals, Communication drums, Horns 6th century BCE: Mail 5th century BCE: Pigeon post 4th century BCE: Hydraulic semaphores ca. 490 BCE: Heliographs (shield signals) 15th century CE: Maritime flag semaphores 1672: First experimental acoustic (mechanical) telephone 1790: Semaphore lines (optical telegraphs) 1867: Signal lamps 1877: Acoustic phonograph Basic electrical signals: 1838: Electrical telegraph. See: Telegraph history 1858: First trans-Atlantic telegraph cable 1876: Telephone. See: Invention of the telephone, History of the telephone, Timeline of the telephone 1880: Telephony via lightbeam photophones Advanced electrical and electronic signals: 1893: Wireless telegraphy 1896: Radio. See: History of radio. 1914: First North American transcontinental telephone calling 1927: Television. See: History of television 1927: First commercial radio-telephone service, U.K.–U.S. 1930: First experimental videophones 1934: First commercial radio-telephone service, U.S.–Japan 1936: World's first public videophone network 1946: Limited capacity Mobile Telephone Service for automobiles 1956: Transatlantic telephone cable 1962: Commercial telecommunications satellite 1964: Fiber optical telecommunications 1965: First North American public videophone network 1969: Computer networking 1973: First modern-era mobile (cellular) phone 1979: INMARSAT ship-to-shore satellite communications 1981: First mobile (cellular) phone network 1982: SMTP email 1983: Internet. See: History of Internet 1998: Mobile satellite hand-held phones 2003: VoIP Internet Telephony |
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