The chances are you’ll see a red LED light if you’re not seriously old-school and your mouse has a ball, this light serves as the illumination for a very simple camera sensor. The mouse ...

The chances are you’ll see a red LED light if you’re not seriously old-school and your mouse has a ball, this light serves as the illumination for a very simple camera sensor. The mouse ...

That’s the red LED light you see when you hold up the mouse’s underside. The patent does not directly reference an optoelectronic sensor. Instead, it describes a “hole provided on one side s ...