A bearing holding portion supporting a crankshaft in a manner to rotate freely via a bearing and fittingly holding the bearing is formed in a crankcase. In various embodiments, a combined layered approach to application detection and various application-detection techniques provide for quick assessments that move from simplest to complex for rapid detection of unauthorized or misbehaving applications in communication with one or more computer networks. The gate driver outputs the gate signals to the gate signal lines in an aligned order of gate signal lines in a second direction when the frame frequency is F1, and the gate driver outputs the gate signals to the gate signal lines in different order from the array order when the frame frequency is F2. If the update data is not the route search data, the dynamic update section updates the map data to the latest version map data according to the update data every time the map data becomes necessary. In addition, the rotating element has a first portion and a second portion, wherein the first portion is pivoted to the housing, and a part of the first portion passes through the first opening to be exposed outside the housing. In one case, the two plates have planes on which scribing is performed, while in another case, only one of the two plates has a plane on which scribing is performed.