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Timeline of communication technology

Timeline of communication technology

3500s BC[?] - The Sumerians develop cuneiform writing and the Egyptians develop hieroglyphic writing
1500s BC - The Phoenicians develop an alphabet
170 BC - Parchment is discovered in Pergamum
105 - Tsai Lun[?] invents paper
350 - The Chinese develop a method for printing pages using symbols carved on a wooden block
1450 - The Chinese develop wooden block movable type printing
1454 - Johannes Gutenberg finishes a printing press with metal movable type
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
1876 - Alexander Graham Bell and Thomas Watson[?] exhibit an electric telephone
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
1948 - Claude Shannon writes a paper that establishes the mathematical basis of information theory
1958 - Chester Carlson[?] presents the first photocopier suitable for office use
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, is connected.
1973 - Akira Hasegawa[?] and Fred Tappert[?] propose the use of solitary waves to carry information in optical fibers
1977 - Donald Knuth begins work on TeX
1980 - Linn Mollenauer[?], Rogers Stollen[?], and James Gordon[?] demonstrate that solitary waves can be propagated through optical fibers
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

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