There are four menus of this application and not a setting is needed. 1.GunBuster This menu provides calculating relative earth's year from light's days or 12000G(gravity)'s days and the reverse―calculating relative light's days or 12000G's days from earth's year―. 2.METRO2035 This menu provides solutioning diffusion equation of heat or carrier from zero time's function value. 3.SpaceBattleShip This menu provides solutioning wave equation from zero time's function value. 4.AKIRA This men