Several types of computer storage devices are available in the market today. The most common is the disk. A disk is a device use for storing information. A disk may be any of the following:
1. Disk pack is the standard magnetic disk for mainframes. It is 14 inches in diameter, stacked vertically, connected together by a central shaft. It consists of a series of platters or disks. It is like a group of phonograph records stacked on a spindle. Many have 11 disks; the number of disks in a pack varies with the unit.
2. Floppy Disk – is a thin, flexible disk that is enclosed in a soft 5 ¼ square jacket. To many microcomputer users, it is usually called diskette. The storage capacity of a diskette ranges from about 360 KB to 1.2 MB. Floppy disks should also be handled carefully to avoid the risk of destroying the data contained therein.
3. Micro Disk – enclosed in a rigid plastic jacket that is 3.5 inches. Micro disk is also called micro floppy.
4. Hard disk – contains a disk platter which spins continuously at a high speed within a sealed enclosure. It can contain a larger amount of data than the floppy disk and a micro disk.
5. CD – an acronym for compact disc, a form of optical disc technology that can combine audio, video, and text on high compact capacity disk.
Parts of a Micro Floppy Diskette
1. Label – it is used for identification purpose. It is where we can write the name of the user and the title of the software contained in a diskette.
2. Spindle Hole – it is a square hole at the back of the micro disk where the spindle drive rests to grip and spin the disk during operation.
3. Write Protect Notch – it is a sliding switch that protects the micro disk from writing or deleting.
4. Index Hole – it is a hole in the media which is used to indicate the position during the reading/writing process.
5. Density Indicator – it indicates the space occupied by the program.
6. Media – refer to products such as punched cards, magnetic tapes, paper, diskettes and other forms on which data are actually transcribed or recorded.
Parts of a Floppy Diskette
1. Label – it is used for identification purposes. It is where we can write the name of user and the title of the software contained in a diskette.
2. Spindle Hole – it is used to spin and grip the disk by the spindle drive.
3. Write protect Notch – it is where we put a strip of sticker to cover the notch to protect the files saved in the diskette.
4. Index Hole – it is the place that indicates the location of all the files and the indexes in the disk.
5.Read/ write Hole – it is a part of the floppy disk which allows the storing and retrieving of information from the disk.
6. Media – refers to products such as punched cards, magnetic tapes, paper, diskettes and others forms on which data are actually transcribed or recorded.