What is Optical Disk Drive ? & Difference Between CD & DVD

Optical disc, known in several names in the world of computer as a disk and disk storage, which is a means of reproduction of audio and video, and the shape of a circular and flat made of polycarbonate, and store data and information in the back of these disks according to the formula and divided into kilobytes in the disk,
Optical Disk

In the form of a round-track relay in storage, and types of optical discs CD and DVD, but the user must distinguish between these types before the use of them to meet the requirements.

The Compact Disc, a CD or so-called compact disc, is one of the optical disk types used to store and store data. It has an area of ​​about 700 MB. Digital signals are the origin of the audio storage, and the manufacturer of the data storage device And depends on the recording of data on the laser beam in the form of trails with a very narrow spiral shape, extends the width of one track to 1.6 micrometers. The CDs contain information that is not editable. The user can read without writing them. This information comes as part of the CD but there is a storage capacity of 184-900 MB. There is a type of read-only CD-ROM, Which carries the term "CD-ROM" as the user can not take advantage of this type in the storage of data, including what is dedicated to the recording of digital audio CD-Audio.

Also Read: Differences Between The FAT32, NTFS, and exFAT Configuration Systems

DVD -Digital Video Disc, known as a digital video or digital Versatile Disc, is a type of optical disc used as a data storage device. This type of optical disc has the ability to save high quality movies in clarity and sound, The great similarity between this type of CD with CD-ROM in terms of measurements is that there is a difference in terms of the density of the encoder. DVD-R, DVD-RW, DVD-RAM, DVD-ROM. "The difference between CD and DVD The difference between a CD and a DVD is that the CD capacity ranges from 650-700 MB The DVD is 4.7 gigabytes (GB), which is seven times the amount of CD. In terms of recording, the user can register on the CD through the CD-RW, ie, the reading and writing units. The DVD is the result of combining two CDs together In a technical way, the CD-DVD and CD-ROM drives differ in terms of price, with the latter being the most expensive at almost tenfold.

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