different between CD and DVD
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Explanation:
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The capacity is the biggest difference between CD and DVD. CD, short for Compact Disc, is an optical medium that can store digital data. ... A standard DVD can hold 4.7 GB of data. So DVD is widely used to store large files like video and movies.
Explanation:
Key Differences Between CD and DVD
A compact disk can hold up to 700 MB of data while a digital versatile disk can hold a maximum 17 GB of data.
As the DVD can acquire a larger size, it is more prevalently used than a CD.
The metal layer used for recording is placed beneath the labelling side in the CD. In contrast, in DVD this metal layer is situated in the centre of the disk.
The layers of pits and land on a CD can be only one whereas in DVD it can be two.
A CD contains the spacing of 1.6 micrometres between spiral tracks and 0.834 micrometres between the pits on the disc. On the other hand, the spiral loops in DVD are 0.74 micrometres apart and the distance between the pits is 0.4 micrometres.
The error correcting codes used in CD are CIRC and EFMP. As against, DVD uses distinct error correction techniques which involves RS-PC and EFMPlus.
The removal of the adhesive label of a CD can cause the severe damage to the CD. On the contrary, when the adhesive label of the DVD is removed, the imbalance in spin is caused.