| History |
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| n | origins
of coded transmission |
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| – | 1793,
Revolutionary France: Aerial Telegraph (but |
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| what
about Chinese, Romans, Native Indians?) |
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| – | 1840s,
Samuel F. B. Morse: coded transmission via |
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| electronic
means, rapid spread throughout US and |
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| Europe,
International Telegraph Union formed in 1865 |
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| n | submarine
telegraphy: 19th century high-tech |
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| – | 1850:
first submarine cable, Dover-Calais |
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| – | 1858:
first transatlantic cable (breaks after 3 months) |
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| – | 1866:
re-laid with higher quality cable |
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