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This is a free sample preview of the essay
Data Storage Devices
Beginning of essay
Even before the first computer was conceptualized, data had already been
stored on hard copy medium and used with a machine. As early as 1801, the
punched card was used as a control device for mechanical looms. One and
one-half centuries later, IBM joined punched cards to computers, encoding
bina ....
Middle of essay
....stacked on top of one
another like records in a jukebox, and the heads that read and write data
to the spinning platters resemble the arm of a record player. Floppy
disks are another common magnetic storage medium. They offer relatively
small storage capacity when compared to hard drives, but unlike hard drives,
are portable. Floppy disks are constructed of a flexible disk covered by a
thin layer of iron oxide that stores data in the form of magnetic dots. A
plastic casing protects the disk: s.... |
| Number of words: 791 |
Approximate pages: 3 |
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