Ó 2001
Prentice Hall
3.29
Optical Disks
•Optical disks use laser
beams rather than magnets to
read and write information
•CD-RW drives can write, erase, and rewrite CDs
•CD-ROM drives are optical drives
that read CD-ROMs
•DVD’s can hold between 3.8 and
17 gigabytes of data, they are replacing CD-ROMs