Search unit, search system and search method

This invention intends to provide a system which makes it easy to search an object by making a number of a procedure of input as less as possible in a case that a factor of an area is regarded as important in searching an object. In order to attain this object an object to be searched is stored in advance together with information on an area relating to the object and the object is output which belongs to the specified area when a condition which is to be the object to be searched is input. If the corresponding information does not exist in a searched area or if the corresponding information is desired to search in an area broader than the searched area, receive an input of a button B of "broaden searching area" so as to broaden the searching area and an area to be searched is broadened from a level of a city, town or village to a level of a country gradually.