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The telephone
In 1793 the telegraph was invented, and signals were first send alosg wires.Nowdays with the satelites over one billion people send messages. -
Who invented?
Johann Reis, Antonio Meucci, Elisha Gray and Alexander Graham Bell invented the first phone.And was invented the first telephones in 1876. -
The progress of the telephone
Then the first words in a segnal converted.All telephones calls had to go throught an operator.The operator ansewer you call.Tooking the numbers that you now you can call any person and too a private call. -
The movile phone
The movile phone was invented in 1979 in USA.Now the comunication with the movile phone is sow long