A route displaying method, which includes: planning a route from a starting point to a target point; determining if the route goes through a 3-D road having an upper road and a lower road; utilizing a first sign to indicate the route when the route passes through the upper road; and utilizing a second sign to indicate the route when the route passes through the lower road. In one aspect, a method of computing is provided that includes defining plural processor performance bins where each processor performance bin has a processor performance state. Based on the category, characteristics of objects in the image are determined match the characteristics of the shape of the license plate. The slider is slidably mounted on the rail. Thereafter, the query results obtained from the second execution of the query may be sent to the client. The device for determining the resistance value is provided with a measuring bridge having the transistor and a known reference resistor arranged in its first bridge arm and having three respectively known resistors arranged in its second bridge arm.