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Difference between revisions of "Hard disk"

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#REDIRECT [[Hard Drive]]
A '''Hard Disk''' is the internal memory storage for a modern computer. Invented in 1972 by [[IBM]] under the name "Smart Drives", these allowed the slow end of paper-tape and magnetic-tape storage systems. The [[Compact Disc|CD]] was invented around the same time, and at the time, the CD held more memory than the early "Smart Drives."
A hard disk drive (HDD), hard disk, hard drive or fixed disk[b] is a data storage device used for storing and retrieving digital information using one or more rigid ("hard") rapidly rotating disks (platters) coated with magnetic material. The platters are paired with magnetic heads arranged on a moving actuator arm, which read and write data to the platter surfaces.[2] Data is accessed in a random-access manner, meaning that individual blocks of data can be stored or retrieved in any order rather than sequentially. HDDs retain stored data even when powered off.
[[File:Seagatefourterabyte.jpeg|350px|thumb|right|A 4TB Seagate Hard Drive]]

Revision as of 06:15, 21 December 2015

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