Disclosed is a shift register including a plurality of flip-flops configured in series to shift input data in response to an applied clock, and a drive operation controller. The capacitor is installed on the capacitor seat in a fastening way such as by pressing downward, rotating the capacitor or in other feasible fastening ways to be electrically connected with the electrical contacts on the PCB. The output gearwheel interacts with a fitting part in an interlocking andor frictional manner. The connecting portion is connected between the fixing portion and the buckling portion, and has two opposite ends and a side surface connected to the ends. The lid is preferably spring hinged such that when opened, the lid is maintained open preventing the lid from closing when the device is tilted. 0 mils, or the heating event time interval is in the range of 0.