Under the control of the CPU, the electronic endoscope device 1 obtains information such as a type name, an S/N (serial number), a use time, the number of uses, etc. of the respective devices as shown in FIG. 2, by making data communications with the light source device (not shown), the endoscope unit 5, and the image recording device 7, which are connected to the electronic endoscope device 1.