A mass storage media for digital information used in computers, video and audio and recently also used for digital image/video storage in digital cameras and camcorders. In contrast to a floppy disk, the hard disk is usually non-removable (though there are already some removable and transportable hard disks). The access time of a Hard disk is much shorter than that of a floppy disk, and the amount of data (images or full video-scenes, for example) that can be stored on a large disk can reach several gigabytes (thousands of megabytes). The name hard disk comes from its internal construction of metal (mainly aluminum) platters, which are very stiff, and not floppy.
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