CD or compact disc
DVD or digital versatile disc
Mini SD
# Hard Disk Drive (HDD) # Floppy Disk # CD Disk # USB Disk # SD Card
use a laser to read and write data. Optical disks have very large storage capacity but they are not fast as hard disks. There are three basic types of optical disks: CD-ROM, WORM and erasable. DVD-ROM is higher- capacity disc
DVDs or CDs
David Gregg was the inventor of the optical disk.
Optical use a laser to read and write data .Optical disks have very large storage capacity but they are not fast as harddisk .There are major types of optical disk 1.CD-Rom 2 Worm 3.Eraser Advantage's optical disks has a very high storing capacity ,inexpensive has along life of at least 25 years .
CDR CDRW DVDR DVDRW Blueray
optical
cd, dvd, and vcd
An Optical Disk
Applications where re-writeable optical laser disk would be preferred over hard disks for storage are: While storing the data in large amount, the optical disk are more preferred as, for storing the videos, photographs and various types of the images. This optical laser disk are used for transferring the information or data from one computer to another so we can easily modify or re-write the data at any time as, this disk are more convenient than hard disk. The optical laser disk are also helpful for distributing the software to the customers or users by using its large storing capacity features, as compared to hard disks.
it is a CD(Compact Disk) and a DVD (Digital Video Disk)
no,harddisk is not an optical storage