Orientation detection circuit and electronic device using the same

An electronic device comprising:

• a main processing unit;
• and
• an orientation detection circuit comprising:
• a processor comprising a first input pin and a second input pin;
• a first resistor;
• a second resistor having a resistance value greater than that of the first resistor;
• a third resistor having a resistance value greater than that of the second resistor;
• a vibration switch comprising:
• a first terminal connected to a power source;
• a second terminal connected to the second input pin and connected to ground via the third resistor;
• a third terminal connected to the first terminal via the second resistor;
• a fourth terminal connected to the first input pin and connected to ground via the first resistor;
• a fifth terminal connected to the fourth terminal;
• and
• a conductive ball configured for simultaneously contacting two or three of the terminals of the vibration switch;
• wherein, the processor is configured for identifying signals from the first input pin and the second input pin, and outputting a corresponding control signal;
• wherein, the main processing unit is configured for executing operations according to the control signals from the orientation detection circuit.