Timeline of communication technology

Timeline of communication technology
* Prior to 3500BC Communication was carried out through paintings of indigenous tribes.
* 3500s BC - The Sumerians develop cuneiform writing and the Egyptians develop hieroglyphic writing
* 1500s BC - The Phoenicians develop an alphabet
* 26-37 - Roman Emperor Tiberius rules the empire from island of Capri by signaling messages with metal mirrors to reflect the sun
* 105 - Tsai Lun invents paper
* 600s - Hindu-Malayan empires write legal documents on copper plate scrolls, and write other documents on more perishable media
* 751 - Paper is introduced to the Muslim world after the Battle of Talas
* 794 - The first paper mill is built by Muslim engineers in Baghdad, Iraq
* 1305 - The Chinese develop wooden block movable type printing
* 1450 - Johannes Gutenberg finishes a printing press with metal movable type
* 1520 - Ships on Ferdinand Magellan's voyage signal to each other by firing cannon and raising flags.
* 1793 - Claude Chappe establishes the first long-distance semaphore telegraph line
* 1831 - Joseph Henry proposes and builds an electric telegraph
* 1835 - Samuel Morse develops the Morse code
* 1843 - Samuel Morse builds the first long distance electric telegraph line
* 1844 - Charles Fenerty produces paper from a wood pulp, eliminating rag paper which was in limited supply
* 1849 - Associated Press organizes Nova Scotia pony express to carry latest European news for New York newspapers
* 1876 - Alexander Graham Bell and Thomas A. Watson exhibit an electric telephone in Boston
* 1877 - Thomas Edison patents the phonograph
* 1889 - Almon Strowger patents the direct dial telephone
* 1901 - Guglielmo Marconi transmits radio signals from Cornwall to Newfoundland
* 1925 - John Logie Baird transmits the first television signal
* 1942 - Hedy Lamarr and George Antheil invent frequency hopping spread spectrum communication technique
* 1947 - Douglas H. Ring and W. Rae Young of Bell Labs proposed a cell-based approach which lead to "cellular phones"
* 1949 - Claude Elwood Shannon, the "father of information theory", mathematically proves the Nyquist–Shannon sampling theorem
* 1958 - Chester Carlson presents the first photocopier suitable for office use
* 1963 - First geosynchronous communications satellite is launched, 17 years after Arthur C. Clarke's article
* 1966 - Charles Kao realizes that silica-based optical waveguides offer a practical way to transmit light via total internal reflection
* 1969 - The first hosts of ARPANET, Internet's ancestor, are connected.
* 1971 - Erna Schneider Hoover invented a computerized switching system for telephone traffic.
* 1977 - Donald Knuth begins work on TeX
* 1989 - Tim Berners-Lee and Robert Cailliau built the prototype system which became the World Wide Web at CERN
* 1991 - Anders Olsson transmits solitary waves through an optical fiber with a data rate of 32 billion bits per second
* 1994 - Internet2 organization created