What is the full form of CD & DVD?
The full form of CD and DVD is Compact Disc (CD) and Digital Versatile Disc (DVD) respectively.
CD stands for Compact Disc. A Compact Disc (CD) are small plastic discs which store and retrieve computer data or music using light. It is a digital optical disc data storage format that was co-developed by Philips and Sony and released in 1982. Compact Discs replaced floppy disks because they were faster and could hold more information. CDs can hold up to 700 MB worth of data, which is about 80 minutes of music.
Mini CDs were also made for special small programs like drivers. CDs that have computer information on them are called CD-ROMs, or Compact Disc – Read Only Memory. The diameter of a normal CD is 120 mm. The middle hole in a CD is about 1.5 cm. The format was originally developed to store and play only sound recordings (CD-DA) but was later adapted for storage of data (CD-ROM). The first commercially available audio CD player, the Sony CDP-101, was released October 1982 in Japan.
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