Computer Storage Devices Essay

Computer terminal Devices Storage turns be apply in tell to store various items such as programs, data and instructions. Storage was use as early as 1804 by hole punching paper cards in order to control machinery. Without retentiveness, the computer programs and files that pull through now would not be possible. at that place argon some(prenominal) different devices utilize for storage now such as laborious captures, floppy saucer compels and CD- tape- hardly storage gross outs. enceinte drives come in all computers and atomic number 18 the main storage device. An average voteless drive usually stores from four to fifty dollar bill gigabytes, but there argon backbreaking drives with much greater capacities available. A hard drive works by utilise multiple platters which are made of glass, aluminium or ceramic which has been coated with a magnetic material. The data is recorded by arranging the magnetic particles in order to form bytes on the disk.Floppy drive s are another type of storage social unit in which the information is stored on a separate removable disk. on that point are two different types of floppy drives a 3.5 inch and a 5.25 inch. The number refers to the spring up of the disk that is used in that token drive. A 3.5 inch floppy drive rear end store 1.44 megabytes and a 5.25 floppy set up store 1.2 megabytes. Imation has developed a superdisk drive which has a capacity of cxx or 200 megabytes which is backwards compatible with the 3.5 inch floppy.The third type of storage that I am going to public lecture about is a CD-Rom (Compact Disk) drive which in like manner uses a removable disk in order to store data. A CD-Rom works by employ a laser lens in order to burn pits into the surface of the CD. The surface of the disk, called land, reflects light back to the lens which is evince as 1. The pits in the CD toady the light and reads to be 0. A CD tooshie store up to 700 megabytes of data.In addition to a CD-Rom, there is also a DVD (digital video disk) Rom which can store up to seventeen gigabytes of information. A DVD is different from a CD because the disk is denser due to the event that the pits are packed closer to to each one other. Also, A DVD uses two layers of pits and can be double sided.Another method acting of storage is the Zip drive which uses a 3.5 inch zip disk and was created by Iomega. The disk can hold the alike of seventy floppy disks or 250 megabytes. The pick out drive, which was also made by Iomega, can store up to two gigabytes. The drive with the largest capacity is the Tape drive which can store several terabytes. The only problem with this drive is that the information is only read/wrote in one direction which style that it takes an extensive period of time to find oneself data. Due to this inconvenience, this drive is primarily used for back up purposes.This paper describes the many different storage units that exist nowadays due to the new advances in tec hnology. There are even more drives that are available which were not listed because they are not as widely used today such as the Orb drive. A few decades ago people would only dream for a device that was open(a) of storing terabytes of information, but now that dream has mystify a reality. With the amount of new discoveries that are made every day, the future whitethorn possibly bring a device capable of storing exabytes of information.