Speed CD-ROM and CD-RW varied from 4X, 8X, 24X to 56X. At first CDROM data transfer speed of 150 Kb / s. So-speed 52X CD-ROM has the ability to transfer data 52 X 150 Kb / s = 7800Kb / s. Interface used is usually IDE (Integrated Drive Electronics). While the DVD-ROM drive is famous for his ability to read the disk format to 4.7 GB capacity than CD-ROM that only a maximum capacity of 720 MB.
Storage Media CD-R (Compact Disc Recordable) and CD-RW (Compact Disc Recordable and rewritable), capacity up to 100MB 720Mb, while DVD-R (Digital Versitile Disc-Recordable) and DVDRW 4.7 GB up to 17GB (double-sided, dual layer)
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