| 摘要 |
A microwave oven using a dual clock allows a microcomputer to have two operation modes, preserves a memory data of a microwave oven in case of a power failure, and minimizes a power-consumption of a battery. The microwave oven having a power-supply part, a load driver and a display part includes an oscillation part for generating many clocks having a different frequency, a control unit for setting at least one among many clocks from the oscillation part as an operation clock according to a power-supply of the power-supply part; and an auxiliary power-supply part for providing a power-supply to the control unit if the power-supply part does not generate a power-supply. If a power-supply is normally applied to a microwave oven, a dual mode is set, and a general mode of using the main clock and the sub clock as an operation clock is set. If a power-supply is not provided to a microwave oven, the main clock is turned off, a power-saving mode of using the sub clock as an operation clock is set.
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