Question

write short note on optical disk and its various categories available

Answer 1

Optical disk is an information storage device for a computer in the shape of a round flat plate which can be rotated to give access to all parts of the surface. The data may be stored optically in an optical disk (such as a CD-ROM).

Various categories of optical disk are:-

Laserdisc (LD)
Compact Disc (CD)
MiniDisc (MD)
Magneto Optical Disc (MOD)
Digital Versatile Disc (DVD)
LIMDOW (Laser Intensity Modulation Direct OverWrite)
Fluorescent Multilayer Disc
Versatile Multilayer Disc (VMD
Ultra Density Optical (UDO)
FVD (FVD)
Enhanced Versatile Disc (EVD)
Blu-ray Disc (BD)
Professional Disc for Data (PDD)
Digital Multilayer Disk
Multiplexed Optical Data Storage (MODS-Disc)
Universal Media Disc (UMD)
Holographic Versatile
Protein-coated Disc (PCD)
Archival Disc

Answer 2

Alternatively referred to as optical media, optical storage, Optical disc drive (ODD), and optical disk, an optical disc is any media read using a laser assembly. The most common types of optical media are Blu-ray, CDs, and DVDs. Computers can read and write to CDs and DVDs using a CD Writer or DVD Writer drive, and a Blu-ray is read with a Blu-ray drive. Drives such as a CD-R and DVD-R drive that can read and write information to discs are known as magneto-optic (MO).

There are four types of optical disks-

CD-ROM- Compact Disk Read Only Memory
WORM – Write Once Read Many
Erasable Optical Disk
DVD ROM.