day before yesterday i got my new DVD writer / reader with CD RW facitlity too. really wondered about DVD, how those techi guys had made out such a large capacity disk to store about 4.3 GB data, which the disk formerly stores 650-700 MB, just 1/7 of DVD. really amazed by the technology. In future, i think the hard disks will be smaller in size which can even hold terra bytes of data and CD’s will hold GB’s of data.
you can find more intresting things about DVD here