Software optimized to use fewer computer resources provides a more appropriate user interface. The invention provides a display device for displaying a screen specified by an instruction. The display includes a display screen, a display frequency setting and a transitioned destination screen. Display control responds to instructions to set the screen to be displayed. A screen display sequentially displays each of a number of screens in response to a number of instructions. A display frequency for a transition destination screen is set in response to an instruction, and a display control sets a screen that the screen display means displays.