DVD

The DVD is an optical disc storage media format, invented and developed by Philips, Sony, Toshiba, and Panasonic in 1995.
====The patterns of ridges on a mirrored surface can be interpreted as bits. These bits can be arranged in sets as bytes and reproduced by means of an analog to digital converter to create music. A CD can store about 650 megabytes of information or 75 minutes of music.==== ====A DVD works exactly the same way of the CD, but it can store much more information: about 4.7 gigabytes (almost seven times the capacity of a CD). DVDs can store more dates than CDs because the bumps are smaller and closer together, which givesmore storage space DVDs.====

A curiosity that many people don't know is that the DVD can translate (via subtitles) 32 languages!! You can also use DVDs to store music. If you do, you can store almost 8 hours of music.
====The DVD is essential for my life. I always watch! I watch when I'm happy, when I bad or even when I'm not doing anything! Watch a movie is magic, you interact with what is happening without moving the place. And you can learn in documentary films.====