What is a CD-ROM

Definition of CD-ROM

CD-ROM stands for "Compact Disc Read-Only Memory." In computer terms, it refers to an optical disc that contains data that can be read by a computer but cannot be written to or modified. CD-ROMs are widely used for distributing software, video games, multimedia, and large files in a durable format.

How CD-ROM Works

A CD-ROM uses laser technology to read data stored in the form of tiny pits etched on the surface of the disc. The disc is inserted into a CD-ROM drive, which uses a laser beam to interpret the data as binary code (0s and 1s), allowing the computer to access the information. The data on a CD-ROM is permanently stored, meaning it cannot be erased or altered.

Storage Capacity of CD-ROMs

A typical CD-ROM can hold up to 700 MB of data, which is enough for storing large software packages, video games, and multimedia applications. Some older CD-ROMs may have slightly less capacity, typically around 650 MB.

Common Uses of CD-ROM

• Software Distribution: Many programs and operating systems were distributed on CD-ROMs during the 1990s and 2000s.
• Multimedia Content: CD-ROMs were commonly used to store videos, audio files, and educational content.
• Video Games: Popular video games for computers and consoles were often shipped on CD-ROMs.