| 摘要 |
A point of sales (POS) terminal apparatus including a POS device, a peripheral device, which is controlled by the POS device, an adapter, and a power management device is provided. The adapter provides a first power signal based on a wall-outlet power signal. The power management device provides the first power signal to drive the POS device and determines whether the first power signal satisfies a predetermined condition. When the first power signal fails to satisfy the predetermined condition, the power management device generates a second power signal and drives the peripheral device with the second power signal. When the first power signal satisfies the predetermined condition, the power management device drives the peripheral device with the first power signal.
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