A DVD, or digital versatile disc, is a type of optical disc storage media. It was first introduced in 1995, and was developed to supersede the VHS tape format. DVDs can store up to 4.7 gigabytes of data, or about nine hours of video. They are typically used to store movies and other video content.

To play a DVD, the disc must be inserted into a DVD player. The player then uses a laser to read the disc, and converts the data into a video signal that can be displayed on a television screen. The DVD player also contains a …