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What is the function of a computer optical drive?

The optical drive in your computer is used to drive optical discs. Optical discs are divided into two types: read-only and read-write, so optical drives are also divided into two types: single-player and read-write. Most of them are single-player optical drives, which are used with corresponding software to store the contents on the CD. A read-write optical drive can hold and write optical discs. The following is what I saw on the Internet. I don’t know if it is useful to you. Take a look: DVD-ROM is similar to the CD-ROM currently used. It is mainly used to store various software, pictures and other digital materials. The Chinese name is Read-only digital multifunctional disc; DVD-Video is similar to the currently used LD or VCD. It is mainly used as a digital audio-visual disc for home use. The Chinese name is digital laser video disc. It can generally be divided into D5 (4.7GB, single-sided and single-layer) ), D9 (8.5GB single-sided double layer), D10 (9.7GB double-sided single layer), D18 (17GB double-sided double layer); in addition, according to different region codes, DVD-Video can be divided into 1- Region 6: China is currently classified as Region 6 because of its serious piracy problem. DVD-Audio is similar to the CD music disc currently used, and is mainly used as a digital music disc for home use. The Chinese name is digital music video disc; DVD-R/R is similar to the currently used CD-R disc, and the Chinese name is disposable Writing digital versatile discs can be subdivided into two standards: DVD-R(A) (DVD-R for Authoring) was proposed by Pioneer in 1998, using 635nm laser and has poor compatibility; DVD-R(G) (DVD-R for General), formulated by the DVD Forum in 2000, uses 650nm laser and has good compatibility. The two standards are incompatible with each other. DVD-RAM is similar to the currently used CD-RW or MO optical discs, and is a rewritable digital versatile disc in Chinese. CD-RW CD-RW is the abbreviation of CD-Rewritable, which represents a "re-write" technology that can be used to repeatedly write data to the same location on a special optical disc. Since its reflectivity for laser is only about 15, which is much lower than CD-R's 65, data must be read normally on an optical drive that provides Multiread function. This is also where CD-RW discs are currently more troublesome. Technology related to rewritable CDs (CD-RW) allows you to erase the disc's contents and reuse them, but CD-RW discs cannot be used in all optical drives. CD-RW drives can write both CD-R and CD-RW discs.

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