Optical Disc

An optical disc is a type of storage media that uses laser technology to read and write data. Examples include CDs, DVDs, and Blu-ray discs. Data is stored as tiny pits and grooves on the disc's surface, which the laser detects when reading. When writing data, the laser alters the surface to encode information. Optical discs are commonly used for music, movies, and data backups due to their portability, durability, and ability to store large amounts of information. They require an optical drive to access the data, making them a convenient way to distribute and preserve digital content.