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Timeline of Communication Technology

355 bytes added, 17:57, 30 December 2017
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| 1774 || Early telegraph invented || Georges-Louis Le Sage || One wire each for 26 letters, ran between two rooms in same house <ref name="semaphore">{{cite web |url=https://www.sciencesource.com/p/16844756/Le-Sage-Early-Electric-Telegraph-9N3574.html |accessdate=December 30, 2017}}</ref>
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| 1774 1791 || Semaphore (French, proof of concept) || Claude Chappe || Ran from Brûlon to Parcé <ref name="semaphore">{{cite web |url=http://www.johnhearfield.com/Radar/Chappe.htm |accessdate=December 30, 2017}}</ref>|-| 1794 || Semaphore (French, operation) || || Paris to Lille <ref name="semaphore">{{cite web |url=http://www.johnhearfield.com/Radar/Chappe.htm |accessdate=December 30, 2017}}</ref>|-| 1794 || Semaphore (Sweden, operation) || || <ref name="semaphore">{{cite web |url=https://en.wikipedia.org/wiki/1794_in_Sweden |accessdate=December 30, 2017}}</ref>|-   |
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