A high torquehigh speed brushless DC motor system for controlling both the speed and torque of the motor including a rotor and a stator, the stator of the motor including a first, second and third winding. An electronic device includes a calendar application and a variety of other applications such as the message reader application or the daily alarm application. The first common layer may include a first doping layer and a second doping layer disposed on the first doping layer. The MOS transistor has a drain region, a body region, and a source region in the first semiconductor region.