An illuminated flag decal attached to a base surface. Arithmetic units optimized for lower power consumption and methods for optimization are disclosed. The first dielectric stack layer is formed on the N-type well and between the first doped region and the second doped region from among the three P-type doped regions. The cyclone inlet includes an inlet flow channel in fluid communication with the inner flow passage of the cyclone body. In an embodiment, the method comprises removing the rotational force transmitting assembly from the photoconductive drum, providing a replacement photoconductive drum, and attaching the rotational force transmitting assembly to the replacement photoconductive drum. The above processes are repeated, so that Pareto solutions can be obtained according to MOGA in consideration of a trade-off relationship between the objective functions.