User:Rtarat/sandbox

OPTICAL MOUSE

The traditional trackball mouse is now overrun by the optical mouse .It is also called the intelli mouse.It has a digital camera mounted that is used to take pictures,at the rate of almost 1500 per second and the onboard chip determines the direction of movement. It uses a LED(Light emitting diode) that emits light thais bounced from the surface and is detected by a CMOS sensor.The inbuits digital camera captures the image and sends it to a digital signal processor for analysis.The processor analyses the image and compares it with previous images to determine the change in position.This information is then sent to the processor and the corresponding coordinates are then displayed by the cursor.