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optical disc encodes binary data (bits) in the form of pits (binary value of 0 or off, due to lack of reflection when read) and lands (binary value of 1 or on, due to a reflection when read) on a special material (often Aluminium) on one of its flat surfaces. The encoding material sits atop a thicker substrate which makes up the bulk of the disc and forms a dust defocusing layer. The encoding pattern follows a continuous, spiral path covering the entire disc surface and extending from the innermost track to the outermost track. The data is stored on the disc with a laser or stamping machine, and can be accessed when the data path is illuminated with a laser diode in an optical disc drive.
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What is an optical disks?
an optical disk which stores data optically
What is the meaning of disk drive?
Optical disk drives are also known as cd roms for your computer. They allow you to store data and burn information on them from the disk drive slot on your computer.
How is an optical device used to store information?
A CD, DVD or Blueray disk recorder player.
What is the meaning of Optical Disk Drives?
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
What are the limitations of optical disk?
(a)- it is a read-only storage medium. Data once recorded, cannot be erased, and hence the optical disk cannot be reused. (b)- thd data access speed for optical disk is slower than magnetic disks; (c)- optical disk require a more complicated drive mechanism that magnetic disk.
Does optical disk use laser beam?
Yes, optical disks use a laser beam to read and write data on the disk. The laser beam is focused onto the surface of the disk to detect and interpret the patterns of pits and lands that represent the data stored on the disk.
True statement about formatting a floppy disk for the first time?
Formatting prepares a floppy disk to store data
Why optical laser disk is preferred over hard disk for storage?
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.
How much data can a stiffy disk store?
whats a stiffy disk
Is a storage device used to store data when the data is not being used in memory?
A hardware device, such as a hard disk or floppy disk, used to record and store data.
Who store a data in computer?
hard disk
Is a disk drive a optical storage?
No. A disk drive can use one of several methods of storing data, including magnetic, Flash, and optical.
