The present invention 10 discloses a plaque eradicating toothbrush series having a set of toothbrushes 12, 22, 28 with multiple functions and can be provided with interchangeable brush heads or in one piece. With a single set of development tools, software developers can create applications that will flexibly run on one CPU or on combinations of central, auxiliary, and peripheral processors. After the game, input timings at which buttons are operated during the game are collected and then evaluated so as to determine an absolute and relative timing coincidence in a predetermined period. A actuation voltage is needed to create sufficient electrostatic attraction to cause a surface to deform. Each second amplification module is configured to receive a control signal from the second gain control device, provide second stage amplification to a corresponding one of the number of output signals based upon the control signal and produce an amplified output signal. The signal from the first output of the signal selecting circuit is supplied to the data latch circuit as a latch timing signal.