This article is a portable information terminal such as a smartphone, which is a web browsing function via the Internet, a data management function within a folder, a data editing function displayed on the display unit, a web browsing function via the Internet, and an address book management. Function, still image and moving image reproduction function, data input function, and graph creation function. The image shown on the front view display is an image used for the operation to make the real estate auction price on the Internet ready to be displayed in a graph. Information is input to the lower input screen, and the limit input icon and By operating the graph update icon, the graph is automatically calculated based on the input information and limit input information set in advance, and the graph is automatically displayed. This is a matching graph design screen that is designed so that the graph grows to the right, the red graph goes down, the blue graph goes up, and finally the two graphs intersect. The part indicated by the solid line is the part that is about to undergo design registration as a partial design. The back view and the bottom view are omitted because the part for which the design registration is to be received does not appear.