In the age technology, different storage devices from the large diskettes to compact discs are being developed. Today, innovations are made and there are already different types of compact discs. There are CD-R and CD-RW, and DVD-R and DVD-RW. Comparing them all, they all have the same functions. The difference is that CD-R and DVD-R can only read data/files while CD-RW and DVD-RW allow users to erase, edit, and make all the changes they want in the existing information/data stored in the CDs. This difference is already obvious with their labels since R stand for recordable and RW for ReWritable.
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