CD (Compact Disc)

A Compact Disc (CD) is a small, round, optical storage device used to electronically store digital data, most commonly music, but also computer files. Data is encoded as tiny bumps on the disc’s surface, read by a laser in a CD player or drive. The laser detects these bumps and lands, converting them into electrical signals that produce sound or access stored information. CDs provide high-quality audio and reliable storage. They are widely used for music, software, and data backup, offering a portable, durable, and easy-to-use format.