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History of External HDD
Hard drives, also known as hard disk drives (HDDs) were a technology thought up by IBM- and they dominated the market for nearly 30 years.
The initial IBM hard drives are considered external devices because they did not run internally within the computer units.
IBM engineer Reynold B. Johnson is the individual who came up with the idea, of the external hard drive. Johnson’s first external hard drive, the IBM 350 Disk File, supported the IBM 305 RAMAC computer system.
Apple first introduced the concept of the personal computer in the 1980’s, with Microsoft quickly following suit. These computers generally contained internal hard drive disks or a complicated incarnation of an external hard drive.
Internal hard disk drives were revamped to increase storage space. If a user needed more space, he or she would simply replace the internal drive in their computer with one that held more data. It wasn’t until 1994 that the external hard drive once again took center stage.