Microsoft Office Tutorials and References
In Depth Information
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An input device is any hardware component that allows you to enter data, programs, commands,
and user responses into a computer. Depending on your particular application and requirements,
the input device you use may vary. Popular input devices include the keyboard, mouse, digital
camera, scanner, and microphone. The two primary input devices used are the keyboard and the
mouse. This section discusses both of these input devices.
A keyboard is an input device that contains keys you press to enter data into the computer. A
desktop computer keyboard (Figure 4) typically has 101 to 105 keys. Keyboards for smaller
computers, such as notebooks, contain fewer keys. A computer keyboard includes keys that allow you
to type letters of the alphabet, numbers, spaces, punctuation marks, and other symbols such as
the dollar sign ($) and asterisk (*). A keyboard also contains other keys that allow you to enter
data and instructions into the computer.
FIGURE 4 On a desktop computer keyboard, you type using keys in the
typing area and on the numeric keypad.