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what is cd and dvd

CD AND DVD
CD
                                                              compact disc

1st-CD: Compact Disc. A compact disc is a flat, small-rounded recordable device which can store upto 700mb data.

DVD
Digital Versatile Disc.



2nd-DVD stands for Digital Versatile Disc. ... It is a digital optical disc storage format used to store high capacity data like high quality videos and movies. It is also used to store operating system. It is invented and developed by 4 companies named Philips, Sony, Toshiba and Panasonic in 1995.

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