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Hard Drive Evolution
Beginning of essay
Even before the first commercial computers appeared in 1951, "mass" storage, although minuscule by today's standards, was a necessity. As early as the mid-1800s, punch cards were used to provide input to early calculators and other machines. The 1940s ushered in the decade when vacuum tubes were us ....
Middle of essay
....similarly constructed, but they are housed in a rigid plastic case, which is much more durable than the flexible covering on the larger diskettes.
With the introduction of the IBM PC/XT in 1983, hard disk drives also became a standard component of most personal computers. The descriptor "hard" is used because the inner disks that hold data in a hard drive are made of an aluminum alloy. These disks, called platters, are coated with a much-improved magnetic material and last much longer than a pl.... |
| Number of words: 988 |
Approximate pages: 4 |
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