What is the primary function of a mouse in a computer system?

The primary function of a mouse in a computer system is to interpret user actions. This device acts as an input tool, allowing users to interact with the computer's graphical user interface (GUI) by translating physical movements into actionable commands. When a user moves the mouse, the device translates those movements into cursor movements on the screen. Clicking buttons or scrolling with the mouse sends specific signals to the computer, enabling users to perform tasks such as selecting, dragging, and dropping items.

This function is essential for navigating the interface, allows for direct manipulation of objects on the screen, and enhances user experience by making interactions more intuitive and responsive. Other devices, such as keyboards, also interpret user actions, but the mouse provides a distinct, visual method of action that dramatically enhances user interactivity.

In contrast, a storage device saves data, displaying graphical user interfaces is a function of the monitor, and connecting peripherals involves ports and cables rather than the mouse's functionality directly.