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Input devices are components or systems that facilitate interaction between users and electronic devices such as computers, embedded systems, and various other electronics. These devices enable data input through user actions, gestures, commands, or physical contact, thereby transforming human intent into a digital signal or actionable command for the system. Examples of input devices include keyboards, mice, touchscreens, microphones, cameras, joysticks, and many others. They form an essential interface in human-computer interaction, providing intuitive and versatile methods for controlling electronic systems and exchanging information with them.