Abstract
The surveying measured distance and was intended to get the area of the land. We wrote down the result and showed a state of the land to one piece of paper, and it became a map to convey as information. Every time the change of a reduced scale and the viewpoint to grasp a position and mutual relations is carried out, write the map of the paper; it is necessary to clear it, and serious cost produces it. I displayed an object on a display by the appearance of the computer and thought that convenience planned it by unifying various information, and being connected. This develops to today's GIS: Geographic Information System. The development of the computer lowers calculation cost and promotes the complex use, and this can say to the design of the machine. I want to mention a method to lower calculation cost.
