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  1. Copilot 答案
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    Keying devices in a computer are input devices used for entering data through a set of keys. They include:
    • Keyboard: The primary input device for typing letters, numbers, and symbols.
    • Keypad: A smaller device with buttons arranged in a block, typically used for numeric input.
      These devices convert typed characters into machine-readable form before processing. Keying devices are essential for user interaction with computers, allowing for data entry and command input.