Many people wonder how the music of hundreds of CDs can fit into a memory card equal to a little half an inch. Again a memory card is nothing compared to a hard drive. A hard drive is an efficient computer memory device that can store large amounts of data using simple magnetism. The microprocessor on your computer completes all the processes and tasks of the computer — but the hard drive is the device that allows you to store a large amount of data, music, digital photos, text documents, etc. It was a remarkable invention that originated in the 1950's, and surprisingly, its early form was in the form of cassette tapes How is it possible to store data with magnetism? The science behind magnetism is complex. But what happens if you bring a magnet to a piece of iron — you must know that technology বিজ্ঞান the science of magnets is complex but its simple application is much easier. A piece of iron does not have magnetism in the first place, but if you repeat a piece of iron with a mag...
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