Optical Discs for Computers

By: Jesse Miller

An optical disc is a portable storage medium that consist of a flat, round, portable disk made of metal, plastic, and lacquer that is written and read by a laser. Optical disc used in personal computers or 4.75 inches in diameter and less than 1/20 oh an inch of it. Nearly every personal computers has some type of optical disk drives installed in a drive bay.

On these drives, if you push a button to slide the trail, insert the disk, and then push the same button to close the tray. Many different formats of optical disc exists today. These include CD-ROM, CD-R, CD-RW, CD ROM, DVD bar, DVD plus our, D. D., RW, DVD RW, and DVD plus RAM.

A CD-ROM, which is short for compact disc read only memory is a type of optical disk that users can read but not right on or record or you race hits, the name read-only. Eight to go CD-ROM holds from 650 MB and 1 GB of data, instructions, and information. This is equivalent to about 450 high density 3.5 inch floppy disk. Software manufacturers often distribute their programs using CD-ROMs.

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To read a CD-ROM, insert the disk and a CD-ROM drive or a CD-ROM player. Because audio CDs and CD-ROMs use the same laser technology, you may be able to use a CD-ROM drive to listen to an audio cd while working on the computer. Some music companies, however, configure their CDs, so the music will not play on a computer. They do this to protect themselves from customers illegally copying and sharing music.

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