Computer Discs

Computer Discs

Computer discs, also known as optical discs, are a type of storage medium used to store digital data. They are made of polycarbonate plastic and have a reflective layer on one side that stores the data. There are two main types of computer discs: compact discs (CDs) and digital versatile discs (DVDs). CDs were first introduced in the 1980s and quickly became a popular way to store and distribute music. They have a storage capacity of up to 700 megabytes (MB) and can hold up to 80 minutes of audio. CDs are read using a laser beam that reflects off the disc's surface and reads the data stored in the reflective layer. DVDs were introduced in the late 1990s and have a much higher storage capacity than CDs. They can hold up to 4.7 gigabytes (GB) of data, which is enough to store a full-length movie. DVDs also use a laser beam to read the data stored in the reflective layer, but they have a higher density of data, which allows them to store more information. Computer discs have been largely replaced by digital storage methods such as USB drives and cloud storage, but they are still used in certain industries such as music and film production. They are also commonly used for backing up important data and for distributing software.

optical discs, storage medium, polycarbonate plastic, reflective layer, compact discs, digital versatile discs, laser beam, storage capacity, USB drives, cloud storage

— Matthew Baker

CITATION : "Matthew Baker. 'Computer Discs.' Design+Encyclopedia. https://design-encyclopedia.com/define/computer-discs?E=303418 (Accessed on October 14, 2026)"