The full form of CD ROM is Computer Disc Read-Only Memory is referred to as CD-ROM. Before the CD-ROM with its youthful promise of limitless information entered our system, it already existed in all its non-erasable, non-writable glory. Read-Only Memory, or ROM, is a memory that cannot be changed or erased.
The optical reader's laser beams are used to read binary (digital) data that is stored on tiny pits in the optical disc. It is an optical disc with the ability to store data, music, video, games, and other types of files.
A more capable storage medium, the digital video disc (DVD), was introduced in 1995 to handle the proliferation of ever-larger multimedia files (audio, graphic, and video) in computer games, educational software, electronic encyclopaedias, and high-definition movies for television entertainment systems. A storage medium with even more capacity, the Blu-ray, was introduced in 2002.
The use of CD-ROMs, however, has decreased in the twenty-first century due to the increased storage capacity of computers and the simple distribution of large files over the Internet.
Danon, a Japanese company, introduced the CD-ROM format in 1982. Later, at the 1985 COMDEX computer show in Japan, Danon and Sony unveiled the CD-ROM. The CD-ROM gained popularity after this and was widely used. It began to evolve on its own. In 1983, Sony and Philips unveiled the CD-ROM format, also known as the Yellow Book.