Optical mouse

An optical mouse is a special kind of computer mouse that helps you move the cursor on the screen. Instead of having a round ball on the bottom, it has a little camera that takes pictures of whatever surface you're using the mouse on. Those pictures help the mouse figure out which way it's moving and how fast. This information is then sent to the computer, which moves the cursor on the screen accordingly. So, in simpler words, an optical mouse is a device that tracks the movements of the mouse on the surface it’s placed upon, and uses the data to move the cursor on your computer screen.