1 janv. 1876 - Telephone
Description:
Telephone is a telecommunications device that permits users to conduct conversation when they are far apart to be heard directly. It converts human voice into electronic signals transmitted via cables and other communication channels to another telephone which produces the sound to receiving user. It was invented by Alexander Graham Bell.Ajouté au bande de temps:
Date:
1 janv. 1876
Maintenaint
~ Il y a 149 ans