To provide a control device for a dishwasher or a washing machine, including a dryer having an electronic circuit for controlling loading and drive of loading, improving convenience of use, lower cost for parts and a smaller area occupied by parts on a printed board, by controlling a power supply to be turned on/off by a single pressure contact switch.

The pressure contact switch 3 and a resistor 4 are connected in series to a relay contact 2a arranged in a line of an AC power supply 1, and a microcomputer control function 5 is provided for controlling the control terminal of the relay contact 2a, after reading the voltage at a junction between the pressure contact switch 3 and the resistor 4 with a microcomputer 5e, whose operation is started when the pressure contact switch 3 is turned on. The relay contact 2a is controlled to be turned on/off by the operation of the pressure contact switch 3.