In one of those perfect cultural marriages of pop and technology, the 1950s brought us both Elvis Presley and the Sony TR-63, the first transistor radio cheap enough to fit the budgets of teenagers.

FORBES: The Future of Media

In 1954 IDEA Corporation of the United States introduced the Regency TR-1, the world's first transistor radio.

FORBES: TRACKING THE EVOLUTION OF TAKE-OUT TUNES