Original optical disc was the CD. These CD's store data with accordence to a file system structure for either digital recorded music or plain binary data as found in a computers filesystem. Eventually, these were improved in the past five years (to 2009) with greater capacity of data for CD'S up to 750 Mega bytes and then dual(double) sided (2x 750Mb). The filesystem on CD's is not the same in actuallity as a hard drive or Floppy disc and there are various formats for CD's and DVD's. Again the same is of DVD's, but DVD physical capacity and the machinery that reads them has much greater capacity than a CD and can be a double sided if specified. DVD's and CD's have various ratings for writing data to them such as 2X , 4X ,8X and ratings for reading them with a reader only mechanism of 24X , 44X and 52Xspeeds. Another feature that is peculiar to the writing mechanism by the software for DVD or CD is filenames. These are either able to be normal the same as a computer, or a system called jolliet filenames. CD's and DVD's come in three basic types of RW(read and "writeable once") , direct RW that is the same as before but requires no disc formatting and organisation or also can overwrite more than once, RO or CDR read only pre constructed disc or CDRW DVDRW and can be written many multiple times. Another final feature is an action called "overburn" that allows e.g. a 750 Mb disc to have 775 Mb of data dangerously as a possibility at burn time if the disc is well organised and will be finalised.
As the name implies, the storage medium in a magnetic disk system consist of one or more disks mounted on a common spindle. A thin magnetic film is deposited on each disk, usually on both sides
Its advantages are that it has direct access and is the most popular media.
1. Have larger space.
2. More cheaper in the same Gb unit 3. Speed is faster then CD or DVD
common uses of magnetic disks
It is the magnetic elements in a magnetic disk that are used to store information.
computer use to magnetic disk which generation
magnetic disk
Digital information is stored in microscopic needles as part of the disk's magnetic coating.
In a way, yes. The material that makes up the "disk" in a floppy is Mylar, a magnetic substance. Data is stored on the Mylar disk in the form of magnetic charges.
A disk drive.
A sector
help!
magnetic
magnetic tapes are cheaper
Its called a floppy disk.
Magnetic storage is used on hard drives and floppy disks. Sectors of the disk are charged magnetically and are easily changed later. Optical storage uses a laser to read data. On a cd/dvd, the laser picks up tiny marks made starting in the center and rotating outward.