In an electronic device, a combination of an electronic visual display on a housing, electronic circuitry in the housing, the housing having at least one human user depressible surface with associated analog pressure-sensitive element for output of a signal of variable value utilized by the circuitry to control or manipulate one or more functions of the device. Such support crucibles may be made of various materials, in which case graphite materials, carbon fiber-reinforced carbon, combinations thereof or carbon materials coated with silicon carbide are used. The sputtering target includes a polycrystalline oxide containing a plurality of crystal grains whose average grain size is less than or equal to 3 \u03bcm. The active switching elements can be further integrated in the dual-phase interleaved boost circuit to realize the soft switching technology while reducing EMI and the switching loss and increasing the circuit conversion efficiency. Data relating to a first node and a second node is stored in the database.