Simply rolling the mouse pointer over a link on a Web page is known as hover. For example having a computer whenever your mouse hover within the above links within our menu bar they ought to change. It displays a mechanism describing the link if you hover over this link.
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The hard disk was invented on September 13, 1956 by IBM team led by Rey Johnson (considered as “father” of the disk drive). Earlier hard disk drives were large and cumbersome devices.