To provide a data card, which can be used even under the condition, in which vibration is generated at high temperature/high humidity, which has no limitation in the mounting place, which measures and stores the temperature, humidity, and acceleration, and which can communicate with a data port to transmit/receive data.

The data card is provided with a temperature sensor, a humidity sensor, an acceleration sensor, an A/D converter which digitally converts an electric output of each sensor and transmits it to an arithmetic processing part 10, the arithmetic processing part which receives and conducts arithmetic processings the digitally converted data and which has a built-in clock part, a storage part 12, which time-sequentially stores the arithmetically processed result data, an interface which connects a means for transmitting the data that are time-sequentially stored in the storage part to a data port or to a personal computer, and a driving battery.