The Rotary Encoders is an electro-mechanical device that is used to convert the angular position or motion to analog or digital output signals. They are available in two types the first one is absolute and the second one is incremental. Absolute encoder indicates the current shaft position and thus making it an angle transducer. On the other hand incremental encoder provides motion of the shaft. The Rotary Encoders are widely used in areas that requires monitoring or controlling or both. They find their usage in industrial controls, robotics, photographic lenses, rotating radar platforms, etc.