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