The inventive system comprises a touch screen on a mobile device and an application that defines a set of functioning components that provide the functionality for navigating media. A learning processor constructs an output calculating model based on a measured value of an output of photovoltaic generation, sunshine hours, and a solar altitude in a learning period. Methods for producing a maize plant that comprises crossing maize variety 39B22 with another maize plant. A communications bus connects the SDRAM to the data sourcing controllers for facilitating data communications. The offset adjuster gives the offsets to the first input current and the second input current respectively by using the first offset current and the second offset current.