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1860
The earliest known recording was created by Édouard-Léon Scott de Martinville, the inventor of the phonautograph. The recordings were not intended for listening, for the idea of audio playback had not yet been conceived. -
1901
"78 rpm" disc technology is developed. -
1954
Regency and Texas Instruments (TI) develop and market the first all-transistor radio (TR-1). TI markets the first commercial silicon transistor (900 series). -
1976
JVC introduced in Japan the VHS format VCR for $885. Sony introduced a Betamax VCR deck for $1300 and began aggressive advertising claiming that it "can actually videotape something off one channel while you're watching another channel" and "build a library of your favorite shows." The famous consumer video tape cartridge format war starts. -
1985
Dolby introduces the "SR" Spectral Recording system. -
1998
Winmap, DVD Audio, MP3 player -
2014
Bluray, HD, MP3 & 4, etc. Audio/Video production and presentation has developed so vastly, that people can now watch movies and TV shows on their phones no matter where they are.