Abstract: An electronic device includes a sensing unit, a first control unit, and a second control unit. The sensing unit detects a parameter of the electronic device when the electronic device is tilted and sends a detection signal if the detected parameter exceeds the critical parameter. The first control unit and the second control unit receive the detection signal from the sensing unit. If the first control unit receives the detection signal before the second control unit, the first control unit controls the mechanical hard disk to power off and controls a magnetic head on the mechanical hard disk to reset from a working position to an original position. If the second control unit receives the detection signal before the first control unit, the second control unit controls the magnetic head on the mechanical hard disk to reset from the working position to the original position.

Abstract: An electronic device includes a sensing unit, a first control unit, and a second control unit. The sensing unit detects a parameter of the electronic device when the electronic device is tilted and sends a detection signal if the detected parameter exceeds the critical parameter. The first control unit and the second control unit receive the detection signal from the sensing unit. If the first control unit receives the detection signal before the second control unit, the first control unit controls the mechanical hard disk to power off and controls a magnetic head on the mechanical hard disk to reset from a working position to an original position. If the second control unit receives the detection signal before the first control unit, the second control unit controls the magnetic head on the mechanical hard disk to reset from the working position to the original position.

Abstract: An exemplary apparatus for detecting a voltage of a battery on a motherboard includes an embedded controller, a first resistor, and a second resistor. The embedded controller includes an analog to digital (A/D) conversion terminal The A/D conversion terminal is electrically connected to a voltage output terminal of the battery via the first resistor. The A/D conversion terminal is grounded via the second resistor. The A/D conversion terminal detects a voltage value of a connection point between the first resistor and the second resistor. The embedded controller calculates the potential of the battery to determine whether the battery is installed on the motherboard according to the voltage value.

Abstract: An exemplary apparatus for measuring characteristics of a circuit board includes an embedded controller, a first resistor, and a second resistor. The embedded controller includes an A/D (analog to digital) conversion terminal. The A/D conversion terminal receives a DC (direct current) voltage via the first resistor. The A/D conversion terminal is grounded via the second resistor. Resistances of the first resistor and the second resistor indicate different characteristics of the circuit board. The A/D conversion terminal detects a voltage value of a connection point between the first resistor and the second resistor. The embedded controller analyzes characteristics of the circuit board according to the voltage value.

Abstract: An adjusting apparatus includes a display, a host, and a luminance sensing device. The host includes a control module, a comparing module, and a storing module. The control module controls the display to display according to a first initial luminance value. The luminance sensing device senses brightness of the display and sends a first current luminance value, corresponding to the brightness, to the comparing module. The comparing module stores the first initial luminance value to the storing module after determining the first current luminance value to match with a first reference luminance value. The control module decreases the first initial luminance value to a second initial luminance value and controls the display to display according to the second initial luminance value.