Tech over Time By JavannaD 1849 Telephone was invented. 1877 The first permanent outdoor telephone wire was completed. 1880 Almost 50,000 telephones in the US alone. 1900 The first coin operated telephone installed. 1904 “French phone” developed by the Bell company. 1946 Worlds first commercial mobile phone service put into operation. 1947 The transistor was invented at Ball laboratories. 1962 The world’s first international communications satellite, Telstar, was launched.
