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