| 摘要 |
After an activation of the CPU in a peripheral device in a computer system, a determination is made whether an external power supply input or operation of a software switch is inputted as a trigger. Based on this determination, the peripheral device is left ON or turned OFF so as to be in the same state as when power was last removed. When it is not necessary to supply the power to the peripheral device, the power to the CPU is turned OFF to reduce power consumption.
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