Computer input devices are tools that allow users to interact with a computer and provide data. Common examples include the keyboard, which lets users type text and commands, and the mouse, which enables point-and-click navigation on the screen. Other input devices include trackpads, joysticks, and scanners, each serving specific functions to enhance user experience. These devices convert user actions into signals that the computer can understand. For instance, a microphone captures sound input, while a webcam captures video. Together, these devices play a crucial role in how we communicate and work with computers.