A computer mouse is a handheld device used to interact with a computer. It typically has two buttons and a scroll wheel, allowing users to click, select, and navigate through various applications and files on the screen. The mouse communicates with the computer through a wired or wireless connection. The movement of the mouse is translated into cursor movement on the computer display. Users can perform various tasks, such as dragging and dropping items, highlighting text, and accessing menus. The computer mouse has become an essential tool for both casual users and professionals in many fields.