1 gen 1852 anni - Morse Code System Developed
Descrizione:
The invention of Morse Code gave the telegraph technology it's most practical purpose. This is the first example of long distance electronic communication on a consumer scale.
Laurence Turnbull, Electro-magnetic telegraph, p. 77, Philadelphia: A. Hart, 1853 OCLC 60717772
Aggiunto al nastro di tempo:
Data: