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May 20, 600
7th century Hindu-Malayan empires write legal documents on copper plate scrolls, and write other documents on more perishable media
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May 20, 751
751 Paper is introduced to the Muslim world after the Battle of Talas
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May 20, 1305
1305 The Chinese develop wooden block movable type printing
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May 20, 1450
1450 Johannes Gutenberg finishes a printing press with metal movable type
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May 20, 1520
1520 Ships on Ferdinand Magellan's voyage signal to each other by firing cannon and raising flags.
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1793 Claude Chappe establishes the first long- distance semaphore telegraph line
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1831 Joseph Henry proposes and builds an electric telegraph
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1835 Samuel Morse develops the Morse code
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1843 Samuel Morse builds the first long distance electric telegraph line
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1844 Charles Fenerty produces paper from a wood pulp, eliminating rag paper which was in limited supply
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1849 Associated Press organizes Nova Scotia pony express to carry latest European news for New York newspapers
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1876 Alexander Graham Bell and Thomas A. Watson exhibit an electric telephone in Boston
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1877 Thomas Edison patents the phonograph
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1889 Almon Strowger patents the direct dial telephone
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1901 Guglielmo Marconi transmits radio signals from Cornwall to Newfoundland
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1925 John Logie Baird transmits the first television signal
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AD 26-37 Roman Emperor Tiberius rules the empire from island of Capri by signalling messages with metal mirrors to reflect the sun
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1942 Hedy Lamarr and George Antheil invent frequency hopping spread spectrum communication technique
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1947 Douglas H. Ring and W. Rae Young of Bell Labs proposed a cell- based approach which leads to "cellular phones"
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1949 Claude Elwood Shannon, the "father of information theory", mathematically proves the Nyquist–Shannon sampling theorem
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1958 Chester Carlson presents the first photocopier suitable for office use
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1963 First geosynchronous communications satellite is launched, 17 years after Arthur C. Clarke's article
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1966 Charles Kao realizes that silica- based optical waveguides offer a practical way to transmit light via total internal reflection
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1969 The first hosts of ARPANET, Internet's ancestor, are connected.
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1971 Erna Schneider Hoover invented a computerized switching system for telephone traffic.
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1977 Donald Knuth begins work on TeX
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1989 Tim Berners- Lee and Robert Cailliau built the prototype system which became the World Wide Web at CERN
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1991 Anders Olsson transmits solitary waves through an optical fibre with a data rate of 32 billion bits per second
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1992 Neil Papworth sends the first SMS (or text message).
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Period: to
timeline
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105 Tsai Lun invents paper
Tsai Lun invents paper