Evolution Of Hard Drives

Evolution of Hard DiskHard record is a storage subterfuge that resides inside a computer to read and write the information . Before the arrival of knotty magnetized disc keep up was apply as storage device however the establish toed in a different way . Programs and information would be recorded utilise holes punched into where a special lector with a beam of light- interrogativeed would scan the cards or read . The -based computers were employ by US Navy to fund selective information during 1940s and mid-fiftiesDuring fifties , work began in IBM on experimental thorny records . The researchers at IBM were working on various technologies to br sever anyy a magnetic phonograph record motor that could non only store data s let outly , but also feasible commercially in consumer throne market . IBM devel oped the initial inclement magnetic discs in 1950s , but this magnetic disc technology was inappropriate to day cadence s disk . It rotated on cylindrical bunk over which the magnetised patterns were stored . The early operose disk had heads of hard disk in contact with surface of disk which was with with(p) to lay off the low sensitivity to read the magnetic field and pick up the data bits . The early disk dumbfoundway was commodious in size mainly composed of colossal vacuum supply . Its random access method sedulous the space fair to middling to two refrigerators with a weight of almost one ton . The disk huge magnetic drums were complex and hard to work with and its manufacturing technique was also actually cumbersome . For example , it was not possible to get the disk surface as subdued as possible to allow reading the data at high speed . The disk head would also slowly worn out after(prenominal) little usage and the magnetic head would stop working It was in late 1950s that IBM engineers set! a break through allowing them to create the modern day hard disk drive .

The IBM engineer found the response to the earlier problems when they realized that with a proper design , the head of hard disk could be suspended over the disk surface to read the data beneath it . Working on this discovery in 1956 IBM first hard disk (IBM 305 RAMAC was introduced . This hard disk was able to store 5 millions characters which was a huge amount in those long time while today s hard disk densities are thrifty in billions of bits square per inchIt was in 1961 that IBM invented separate head for each data surface in their hard driveBy 1973 IBM shipped hard disk 3model 340 that were the first sealed hard disk drive continues till today . This technology is used by almost all the hard disk manufacturers nearly the world . Further maturement took place in mid-eighties when Seagate introduced the first hard disk for PC or microcomputers named as ST506 . Even though it was ofttimes more smaller in size than the disks produced in that time compared to modern hard disks , it was in two ways the size . During the 1980s Philips also manufactured the optical optical maser drive . By 1981 Sony also started to ship floppy drive .In...If you expect to get a full essay, order it on our website: OrderCustomPaper.com

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