HEATING COOKER

PURPOSE:To permit the inspection of a temperature sensor and a discriminating means simply without employing a different inspecting apparatus, by a method wherein a temperature during detection and a set position during discriminating operation at present time are read and the number of units contained in the numerical values of the reading is counted to drive an indicating means by the number of times corresponding to the number of units counted. CONSTITUTION:A thermistor 3 generates a voltage drop in accordance with a detected temperature, therefore, a voltage, in accordance with the detected temperature, appears in the other terminal of the thermistor 3. This voltage is inputted into a comparator 37 and the detected temperature of the thermistor 3 can be known by a digital signal from a microcomputer 36 at the time point of the change of output of the comparator 37. Operations to know the digital signal is effected by a method wherein a detecting temperature theta is divided by a unit number 50 to obtain a quotient (n) and a remainder (m), subsequently, the remainder (m) is divided by an unit number 10 to obtain a quotient (p) and, then, the fraction of the quotient (m) is processed. As a result, buzzer driving signals, whose number of times is corresponding to the quotient (n), are sent into a buzzer driver 48. Subsequently, LED driving signals, whose number is corresponding to the quotient (p), is sent to a LED driver 49. According to this inspection, the abnormality of the operation of the thermistor 3 may be confirmed.