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Input Devices are electronic components or peripherals used to introduce data, commands, or control signals into a computer system. They serve as an interface between the user and the computer, allowing interaction through various means such as keyboards, mice, touchpads, scanners, microphones, cameras, and game controllers. These devices facilitate input operations in computers, desktop computers, and other digital systems, converting human actions into electronic signals that can be processed by output devices like monitors, speakers, or printers.