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Give differences between a CD-R and CD-RW.

Answer Text:
-A compact disk recordable (CD-R): this storage device allows the user to store information in it only once; it is not re-usable while a compact disk rewritable (CD-RW) allows the user to store information in it more than once as long as the
storage capacity is not used up. It is reusable.
-Once written, the content of CD-R cannot be erased while for CD-RW, the content can be erased and new content added.
-A CD-R is cheaper than a CD-RW.