As we all know, cd-rom and cd disk is widely used in almost every area of human society to record valuable data or information , we can come across many kind of CD-ROM such as: CD, CD-R, CD-RW, VCD, DVD ect. What is the difference and how they differ between these sort of CD-ROM is the topic we are going to discuss. CD: CD-R: CD-RW DVD: VCD: THE invention of CD is a great revolution of …showed first 75 words of 493 total…

…showed last 75 words of 493 total…video disc) is a new generation of disc series ,it is use to present a high quality video/movie or store a large quantity of data/information. The reason it got better performance the cd disk is all because it has a much larger capacitance then cd disc, the lowest data capacitance of a DVD disc is about 4 gigabyte which is 7 times more than a cd disc and largest one (9 gb) is even 14 times more.