Some wrongfully think Sony invented the transistor portable radio. FALSE. Transistor invented in USA by Bell Labs, part of AT&T, and GE and RCA made transistor radios before SONY. How about CDs & DVDs? Again, RCA Labs in USA invented the Video-Disc which had the DVD and CD Technology, long before Sony. How about Videotape Recorders? Again, invented in USA. So basically SONY Invented NOTHING other than the Walkman, which was just the combination of existing transistor radio and existing Cassette Tape Recorder. All SONY ever had going for it in the 1960s thru 1980s (its heyday) was CHEAP YEN MANIPULATED DOWN BY BANK OF JAPAN MERCANTILIST "Beggar thy neighbors vs. USA".