![]() While most keyboard keys produce letters, numbers or signs (characters), other keys or simultaneous key presses can produce actions or execute computer commands.ĭespite the development of alternative input devices, such as the mouse, touchscreen, pen devices, character recognition and voice recognition, the keyboard remains the most commonly used device for direct (human) input of alphanumeric data into computers. However, to produce some symbols requires pressing and holding several keys simultaneously or in sequence. ![]() A keyboard typically has characters engraved or printed on the keys (buttons) and each press of a key typically corresponds to a single written symbol.
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