Abstract: In a method to unlock a touch screen of an electronic device, a press operation is received from the touch screen pressed by a user. The touch screen includes an unlocking interface. The method determines whether the press operation is within a press area of the unlocking interface. When the press operation is within the press area, the method further controls an indicator of the unlocking interface to move at a default speed, and locates a stop position of the indicator on the touch screen when the indicator stops moving. The method unlocks the touch screen when the stop position is within a predefined area of the unlocking interface.

Abstract: A charging device for connecting a battery to a power supply to charge the battery includes a charging unit connected between one pole of the power supply and one pole the battery, a first switch unit connecting another pole of the battery with the charging unit and including a first switch connected between another pole of the power supply and the charging unit, and a second switch unit connected between another pole of the power supply and the charging unit. The power supply charges the battery through the second switch unit when the second switch unit is switched on, the first switch is automatically switched on in the charging process, the power supply charges the battery through the first switch after the second switch unit is switched off, and the first switch is automatically switched off when the battery is fully charged.

Abstract: A charging device for connecting a battery to a power supply to charge the battery includes a charging unit connected between one pole of the power supply and one pole the battery, a first switch unit connecting another pole of the battery with the charging unit and including a first switch connected between another pole of the power supply and the charging unit, and a second switch unit connected between another pole of the power supply and the charging unit. The power supply charges the battery through the second switch unit when the second switch unit is switched on, the first switch is automatically switched on in the charging process, the power supply charges the battery through the first switch after the second switch unit is switched off, and the first switch is automatically switched off when the battery is fully charged.