-
-
The world's first comercially produced transistor radio.
-
Were introduced by various companies in the late 1970's when stereo capabilities were added to existing desings of the radio cassette recorder.
-
is a sony brand tradename originally used for portable audio cassette.
-
was the product name given to the Sony's first portable CD player, was the first on the market in 1984.
-
Intended for storage up to 74 minutes, and later 80 minutes of digitalized audio.
-
was the first mass- produced portable solid state digital audio player.
-
is a line of portable media players designed and marketed by Apple and released on October.
-
it features front facing camerera and records 720p videos.
