PROBLEM TO BE SOLVED: To reduce electric power consumption by a rotary knob and return from malfunction of an IC of the rotary knob caused by radio wave noise and static electricity noise.
SOLUTION: A heating cooker includes a heating means 1, a main control circuit 2, an input means 7, a microcomputer 3, a display means 4, a power supply circuit 5 and an electric power opening/closing means 6. In a period when the microcomputer 3 does not retrieve data from the input means 7, OFF operation of the electric power opening/closing means 6 is performed from the microcomputer 3, so as to enable reduction in electric power consumption by the rotary knob and return of the operation of the IC of the rotary knob by IC reset operation during malfunction of the IC caused by radio wave noise and static electricity noise.
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