PORTABLE REAL TIME DATA BASE SYSTEM

PURPOSE:To retrieve fluctuation information at an arbitrary position and time to be displayed by separating a reception part and a display part to be provided on another display device and connecting the display device in freely attachably and detachably to the reception device. CONSTITUTION:The fluctuation information of various kinds of areas is inputted in an input device 1, a transmission device 2 is processed to be transmitted, a portable display device 4 is arranged in freely attachably and detachably to a reception device 3. The fluctuation information to be inputted is composed of various kinds of real time information changing according to time and there are many types to be divided into the fixed information and fluctuation information according to the area. The fixed information, equipped with the basic or standard characteristic, stored in a storage medium 5 freely attachable and detachable to the portable terminal equipment 4 according to the type of information, can be updated as occasion demands. The fluctuation information is inputted via key, a calculating device, etc., and there are no limitation. Thus, real time information and even a large amount of information independent of real time can be treated and diverse information can be offered by dividing the fluctuation information and the fixed information.