A computer mouse is an input device that allows users to interact with the graphical user interface (GUI) of a computer. It is a handheld pointing device that moves a cursor on the computer screen and allows users to click, double-click, and drag items.
The traditional computer mouse consists of a ball that rolls in response to movement, two buttons for clicking, and a wheel for scrolling. However, modern mice use optical or laser technology instead of a ball and may have additional buttons for customized commands.
The mouse communicates with the computer through a cable or wirelessly using Bluetooth or radio frequency (RF) signals. When the mouse is moved, the optical or laser sensor on the bottom detects the movement and sends signals to the computer, which moves the cursor on the screen in the corresponding direction.
The buttons on the mouse are used to perform various functions, such as selecting items, opening menus, and executing commands. The left button is the primary button and is used for most functions, while the right button is used for context-specific actions such as opening a context menu. The wheel in the middle is used for scrolling up and down in documents, web pages, and other applications.
In addition to the traditional mouse, there are other types of pointing devices such as trackballs, touchpads, and styluses that are used for different applications and preferences.
In summary, a computer mouse works by detecting movement and sending signals to the computer to move the cursor on the screen. The buttons on the mouse are used for various functions, and the wheel is used for scrolling in applications.