What is an optical disk?

An optical disk is a medium for storing digital information, usually made from a single piece of plastic. The new and original meanings of optical disk are as follows:

New: Optical disks usually refer to rewritable or read-only optical disk formats such as digital audio disks, digital video disks, and data disks. These discs read and store digital information through the use of laser technology and are typically used to store digital content such as music, movies, software, games, and more.

Original meaning: compact disc originally referred to a digital audio disc, also known as CD (Compact Disc), jointly developed by Phillips and Sony in 1982. This type of optical disk reads and plays digital audio through the use of laser technology, providing higher sound quality and longer life than traditional vinyl records.

In a nutshell, an optical disk is a digital information storage medium, and there are various types such as digital audio disks, digital video disks, and data disks, and the original optical disk refers to the specific type of digital audio disk known as a CD.