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Engineering / Claude Chappe / Semaphore line / Electrical telegraph / Polybius / Samuel Morse / Code / Communications protocol / Telecommunication / Telegraphy / Technology / Telephony
Date: 2008-06-30 15:34:26
Engineering
Claude Chappe
Semaphore line
Electrical telegraph
Polybius
Samuel Morse
Code
Communications protocol
Telecommunication
Telegraphy
Technology
Telephony

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