Laser beams are used to read and write data on CDs and DVDs. Apart from writing on these disks, the laser beam can also be used to erase the data stored or even overwrite the data stored with fresh data depending on the type of disk used.
Yes.
An optical drive, or more accurately an optical disk drive (ODD) is medium for storing digital data. Examples are CD, DVD and blu-ray. The characteristic of an optical drive system is that beams of light (typically laser) are used to read the medium.
No, tape drives use magnetic means for storing and reading data. Any kind of Compact media, (CDs, DVDs, Blu Ray, etc.) on the other hand, use lasers to read and write data. (Verify that part, someone.)
barcode
A CD-RW drive or DVD-RW drive.
A CD drive uses an infrared laser to read the data. An ultraviolet ray is used in Blu-Ray players, which gives them a much higher storage capacity.
A laser
The type of data passing mechanisms under JMS specification is a CD- Rom drive. You can read all the data that is on the CD with a laser.
CD's and DVD's are not magnetic. They are optical storage devices that are read with LASER beams.
A CD has microscopic pits and ridges that a CD drive can read. In order to read these pits, the drive has a laser that fires at the bottom of the CD and detects those pits and ridges. It then sends that raw data to the computers proccesser or motherboard, which decodes the data into a form the computer can use.
They both hold data They are both disc shaped A drive is used to read or write to them The primary difference is the way they hold data. The data on a floppy disc is carried and read magnetically. The data on a CD is recorded and read optically with a laser.