Abstract: An electronic equipment such as a CPU body of a computer system includes a circuit board section, an abnormal temperature detecting section, a determining section, a refrigerant cooling system, and an alarm unit. The circuit board section for effecting preset signal processings includes a printed circuit board on which at least one PTC (Positive Temperature Coefficient) thermistor built-in type integrated circuit device including a package, an integrated circuit chip disposed in the package, a PTC thermistor disposed between the package and the integrated circuit chip, and an electrical deriving member disposed in the package, for transferring a signal with respect to the integrated circuit chip and PTC thermistor, and electronic elements are mounted. The abnormal temperature detecting section outputs an abnormal temperature signal when an output of the PTC thermistor has exceeded a preset value.