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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
1942
-
Hedy Lamarr
and
George Antheil
invent
frequency hopping
spread spectrum
communication technique
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, are 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
See also
Timeline of postal history