A physical quantity detector, such as a pressure sensor and a load sensor, includes a cylindrical part of which one end is closed with a strain generating part and a sensor part formed on the strain generating part. In various embodiments, the invention identifies, from a plurality of input signals, a highest priority signal that is in a selected state. At least one groove is formed in the outer periphery of the piston, with the groove defining a precise volume between the piston and the cylinder, and extending in an axial direction of the piston. The mobile telephone auxiliary dialing device includes a signal receiving controller, a pair of XY axis sliding arms, and a press module. One aspect of the systems and methods includes allowing a gaming machine to send events comprising a script to a sign through a sign controller.