Optical storage devices save data as patterns of dots that can be read using light.
The data on the storage is read by bouncing the laser beam off the surface. If the beam hits a dot it is reflected back differently to how it would be if there were no dot.
The 3 most common types of optical disks are CD, DVD, VCD.
The data on the storage is read by bouncing the laser beam off the surface. If the beam hits a dot it is reflected back differently to how it would be if there were no dot.
The 3 most common types of optical disks are CD, DVD, VCD.
A CD-ROM disc (read-only-memory) is an adaptation of the CD that is designed to store computer data in the form of text and graphics. You can only access the data is only accessible using a computer.