1,024 megabytes. Those in the know usually abbreviate this as GB when writing, and as gig when speaking.

See also [byte]
See also [kilobyte]
See also [megabyte]

hard disk

A storage medium that consists of several metallic disks stacked on top of each other, usually protected by a metal outer case. Hard disks are available in a variety of sizes and capacities and are usually the main storage area inside your computer.


A list of folders, files, or Web sites you have opened recently. You can display the History list and then select to view any of the items in the list.


To place the mouse pointer over an object for a few seconds. In most Windows applications, for example, if you hover the mouse over a toolbar button, a small banner pops up that tells you the name of the button.