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Name: Dutch
Status: N/A
Age: N/A
Location: N/A
Country: N/A
Date: Around 1995

How does a computers hard drive and send data? Please be as technical as possible.

For details on this you should visit the library. There are many magazines devoted to computers and most will have introductory articles that would cover this type of information -- use the Reader's Guide or some other index (ask your local librarian for help) to locate specific articles of use to you.

Basically, the hard drive works the same as a cassette tape. The surface of a flat disk (a platter) is coated with a magnetic material (just like a cassette tape). A reading and/or writing head senses or creates a magnetic field over a very small part of the platter. Let us just discuss reading. The reading head moves over the platter in a specific pattern. If it senses a magnetic field it sends a "1" to the computer. If it does not sense a magnetic field it sends a "0". The pattern of "1"s and "0"s contains the information that the computer needs to do its work.

G Bradburn

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