What is DVD
This is short for Digital VideoDisc or Digital Versatile Disc. This devise is a compact disk used for storing large amounts of data or audio visual material.
This optical digital disc can hold more data than a normal compact disc and can record on both sided. It can hold around 4.7 GB compared to 700MB on a cd. It diameters are the same as a normal cd (120mm/4.75" diameter).
Typically these are used to store and sell films but the computer industry are using it more and more to store data as the recorders are now more easy available to the public and given with PC's.