The mouse is a pointing device used to interact with a computer. You move it across a surface, and a cursor moves on screen. You click buttons to select, open, and drag. It was invented by Douglas Engelbart in 1964. The first one was carved from wood. It had one button.

Mice have evolved. Mechanical mice used a rubber ball and rollers. Optical mice use light and sensors. Laser mice are more precise. Wireless mice use Bluetooth or USB receivers. Gaming mice have high polling rates and customizable buttons. Ergonomic mice reduce wrist strain.

Types of mice

• Wired: reliable, no battery
• Wireless: Bluetooth or 2.4 GHz dongle
• Optical: LED sensor
• Laser: more precise on varied surfaces
• Trackball: stationary, ball on top
• Vertical: ergonomic, handshake grip

The mouse is not the only pointing device. Trackpads, touchscreens, and styluses are common. But for precise work like graphic design, video editing, and gaming, the mouse remains the tool of choice.