OSA | Living History

Compact discs inexpensively store software, movies, games and data.

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Optical Data Storage

Compact discs (CDs) provided a portable, inexpensive option to store digital data.

Laser beams are used to both “burn” data into the disc for storage and read the data. CDs store software, movies and music. Their use in the music industry ushered in a new era in recording technology. (Photo: iStock.com/borisyanko)

(Courtesy of iStock.com/borisyankov )