CARD DEVICE WITH DISPLAY FUNCTION AND CARD DEVICE WITH HUMIDITY MEASURING FUNCTION

摘要

PROBLEM TO BE SOLVED: To reduce the battery consumption of a card device. SOLUTION: This card device is divided into a card main body 60 and a displaying part 70, and they are respectively provided with batteries 62 and 73 for driving the inner part. The battery 73 and a display circuit 71 are connected to wiring 64 by connecting the body 60 with the part 70 only when display is performed on the display element 72 of the part 70. When the battery 73 and the circuit 71 are connected, the element 72 is driven to perform display.