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A computer mouse is a handheld input device that allows users to interact with a computer's graphical user interface (GUI). It typically consists of a small, often oval or rectangular-shaped body that fits comfortably in the user's hand, and it features buttons and, in many cases, a scroll wheel. ### Key Functions: 1. **Pointing:** The primary function of a mouse is to move the cursor on the computer screen, allowing users to select and manipulate items.