Compact Diskette (CD)
CD-ROM
CD-ROM stands for Compact Disk-Read Only Memory. This disk comes with data already stored in it. It can store around 640 MB of data. It is used as a medium to distribute the software for installation. It is also used in many multimedia applications which need lot of space.
Writable CDs
These CDs will allow to store the data just like a floppy diskette or a Hard disk. The advantage of writable CDs is that the data stored will not get corrupted as the data is protected from static electricity.