A transducer apparatus may include a slide housing, an inner housing, a member attached to the inner housing, a free-floating transducer housing, a transducer, and transducer springs. Example methods comprise applying an initial energy from an energy source to a first location of a conductive layer of the semiconductor device. The access point is connected to the network core by an IP transport broadband connection. A current control value producing means produces a next current control value for the data port DQA by receiving the first control signal and a present current control value of the data port DQA and producing another next current control value for the data port DQB by receiving the second control signal and a present current control value of the data port DQB. The overgrown p-type epitaxial layer is polished with reference to the nitride film, the polished surface is finished by etching, and the n-type epitaxial layer surface is exposed. The function selecting module is disposed beside the display panel and has a plurality of function selecting buttons for selecting a predetermined function.