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1836 – Samuel Morse develops the Morse code.
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1843 – Patent issued for the "Electric Printing Telegraph", a very early forerunner of the fax machine
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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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1920 – Radio station KDKA based in Pittsburgh began the first broadcast.
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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 propose a cell-based approach which led 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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1965 – First email sent (at MIT).[11]
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1969 – The first hosts of ARPANET, Internet's ancestor, are connected.[12]
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1971 – 8-inch floppy disk removable storage medium for computers is introduced.[13]
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1976 – The personal computer (PC) market is born.
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1981 – Nordic Mobile Telephone, the world's first automatic mobile phone is put into operation
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1983 – Microsoft Word software is launched.[15]
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1989 – Tim Berners-Lee and Robert Cailliau build the prototype system which became the World Wide Web at CERN.
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1991 – GSM is put into operation
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1992 – Neil Papworth sends the first SMS (or text message).
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1994 – Internet radio broadcasting is born.
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2004 – Facebook is launched, becoming the largest social networking site in 2009.
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2006 – Twitter is launched.
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2007 – iPhone is launched.
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2009 – Whatsapp is launched.
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2010 – Instagram is launched.
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2011 – Snapchat is launched.
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中国开启5G商用之路