2006-08-07 04:47:58 · 6 answers · asked by luvos 1 in Computers & Internet ➔ Hardware ➔ Other - Hardware
A DVD can store data on multiple levels in addition to using a better compression algorithym. They hold over 10 times the data of a CD.
2006-08-07 04:52:51 · answer #1 · answered by Barkley Hound 7 · 0⤊ 0⤋
It's not a matter of size. It's just how the data is stored. Bluray and HD-DVD are coming out sporting 50gb and 30 gb, respectively, dual layered. They use blue lasers instead of red ones. I don't know how exactly the data system works with DVD, but it is much different than CD.
2006-08-07 11:58:54 · answer #2 · answered by The Emb3r Egg 2 · 0⤊ 0⤋
A DVD drive uses a different laser to read and write information. This laser is more precise, and can write the information smaller, allowing more data to be written in the same space.
Also some DVDs are dual-layer. This means there is two layers of data on the disc. The laser refocuses and it can read the other layer. CDs can only use one layer of data.
2006-08-07 11:54:33 · answer #3 · answered by Bryan A 5 · 0⤊ 0⤋
a vcd reads from inside to outside. but on the other hand the dvd reads from inside to outside and then from the outside to the inside. so it has more storage capacity. and also there is differene betweent the pits and lands also.
2006-08-09 08:01:27 · answer #4 · answered by Ankur G 3 · 0⤊ 0⤋
There is a dual layer and a narrower beam for DVD
2006-08-07 11:53:17 · answer #5 · answered by BigD 6 · 0⤊ 0⤋
Never thought about it but I don't know!!!!
2006-08-07 11:52:37 · answer #6 · answered by shortydhg 2 · 0⤊ 0⤋