| Apple manufactures various parts of computers. | | | | gigabyte whereas the Cds store the data maximum |
| Optical drives are one of the products, manufactured | | | | 800 megabyte. These drives also read the data |
| by apple. Optical disks are a storage medium of data | | | | which already written/encoded on the disks. The |
| and optical drives are used to read and write these | | | | DVD-ROM supports disks with capacities of 4.7GB to |
| data on optical disks. | | | | 17GB and access rates of 600 KBps to 1.3 MBps. The |
| The optical disc consists of a ferromagnetic material | | | | one specialty of DVD-ROMs is that these enable to |
| sealed with a plastic coating. Optical drives have | | | | read the data from CD disks also. |
| lasers that help to read and write the data in | | | | DVD-RW: - DVD-RW stands for digital versatile disc |
| computer understandable forms. During reading, a | | | | writer. These drives have used to write the data on |
| laser beam projected on the disk and it reflects lights. | | | | DVD disks as well as CD disks and also read the data |
| The reflected light varies due to the magneto-optical | | | | which has written on disks. These drives enable to |
| Kerr effect. | | | | read data many times and also enable to write data |
| During writing on the disk, the light becomes stronger | | | | many times depend upon the properties of disk that |
| so it can burn the disk in a single spot. This allows an | | | | the properties of disk shows write once or write |
| electromagnet positioned on the opposite side of the | | | | many. To write the data on DVD disks, these drive |
| disc to change the local magnetic polarization and | | | | use laser. Laser burn the data on disks as computer |
| data writes on disks. | | | | readable form. |
| There are various types of optical drives. These | | | | Blu-Ray drives: - Blue ray drives are enable to read or |
| optical drives are: | | | | write the data on disks that has the capacity of 50 |
| CD-ROM:-CD-ROM stands for compact disk read only | | | | gigabytes, 25 gigabyte capacity of each side. These |
| memory used to read data from disks. These drives | | | | disks are readable and writable on both sides. |
| enable to read data from audio cds, video cds and | | | | DVDs are mainly used for video and not for |
| also mp3s. These drives read the data which already | | | | software distributions. DVD drives are still backwards |
| written/encoded on the disks. The data read on the | | | | compatible with CD formats however. All optical |
| disks are read by many times. | | | | drives are rated by speed that refers to the |
| CD-RW: - CD-RW stands for compact disk writer. | | | | maximum speed the drive operates when compared |
| These drives have used to write the data on disks | | | | to the original CD or DVD standards. There are many |
| and also read the data which has written on disks. | | | | speeds of CD writers, which vary through 8x to 52x. |
| These drives enable to read data many times and | | | | A 24x drive may run up to 24x when writing. |
| also enable to write data many times depend upon | | | | Go to these websites to get the latest updates |
| the properties of disk that the properties of disk | | | | about your apple and mac parts. |
| shows write once or write many. To write the data | | | | The internet is the best place to buy cheap |
| on CD, these drive use laser. Laser burn the data on | | | | computer parts. Due to increase in demand for many |
| disks as computer readable form. | | | | parts in many suppliers find it profitable to sell their |
| DVD-ROM: - DVD-Rom are read only digital versatile | | | | products online. The online dealers have their |
| disc drives that read the high capacity of storage | | | | websites, which offer information on the various |
| data disks. These disks store the data minimum 4.7 | | | | types of Mac parts available for purchase. |