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Devices used to input data into a computer, typically via a wired or wireless connection. Keyboards consist of a set of keys that correspond to letters, numbers, symbols, and function keys, allowing users to type text and input commands. Mice are handheld devices that move a cursor on the computer screen, allowing users to click on icons, navigate menus, and interact with different applications. Both keyboard and mouse are essential tools for interacting with a computer system efficiently.