A switch apparatus includes pushers for operating the switch bodies, provided between an operating element, which is adapted to undergo a turning operation, and each of switch bodies. In this regard, a plurality of signals received via a plurality of antennas may be detected and a plurality of transmit signals may be generated, wherein a phase of at least one of the plurality of transmit signals is responsive to at least one of the detected phases of the received signals. The piezoelectric ceramic composition with the silver layer is attached to at least one surface of a metal plate to make a piezoelectric element which is used to make a piezoelectric actuator, loudspeaker or buzzer. Upon receiving a project type indicator from the user, the project creation wizard locates a corresponding script file and parses through each entry of the script file, systematically utilizing the corresponding information to search for applicable BIOS components and to allow or reject user selections of the located BIOS components according to the data within the script file entry.