Kommunikationsteknikens utveckling By Gulla Nov 10, 1791 optisk telegraf - semafos Nov 10, 1837 Elektrisk telegraf Nov 10, 1876 Telefon Nov 10, 1877 Edison fonograf Nov 10, 1878 Mikrofon Nov 10, 1888 Berliners grammofon Nov 10, 1894 Trådlös telegraf Nov 10, 1897 Katodsrålerör Nov 10, 1898 magnetisk ljudupptagning Nov 10, 1909 Elektronrör Nov 10, 1920 Radiosändning 1920-talet Nov 10, 1926 Bairds Nov 10, 1928 Elektronisk television Nov 10, 1935 Radar Nov 10, 1954 transistorradio Nov 10, 1958 Mikrochips Nov 10, 1960 Laser Nov 10, 1972 Videospelare Nov 10, 1981 Mobiltelefonen Nov 10, 1982 CD-spelare Nov 10, 1983 Internet Nov 10, 1998 MP3-spelare