-
early phonograph
invented by thomas edison in 1877 -
phonograph
edison establishes the edison speaking phonograph company -
the radio
first radio broadcast -
the victor phongraph
most high tech of the phonograph product -
teslas a phony
tesla did not build a working radio marconi did but tesla took credit -
the new radio
invented in 1943 by gugliemo marconi -
mp3 players
mpeg established -
mp3s patented
germany builds and patends first mp3 under that title -
mp3 player
algorithm integrated was founded
