Compact Diskette (CD)
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.
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.