Electronic device and display method

A display method, using a light emitting unit to display internal status of an electronic device, wherein the electronic device comprises the light emitting unit, a power control unit, a register data storage unit and an input switch, the method comprising:

• producing a switch signal via the input switch;
• selecting the register data storage unit or the power control unit according to the switch signal;
• transmitting power status data of the power control unit to the light emitting unit, when selecting the power control unit;
• and
• transmitting register data of the register data storage unit to the light emitting unit, when selecting the register data storage unit.

An electronic device, comprising:

• an input switch configured to produce a switch signal and an address signal;
• a power control unit configured to transmit power status data;
• a register data storage unit configured to provide corresponding register data according to the address signal;
• and
• a signal control module electrically coupled to the power control unit, the register data storage unit and the input switch, and configured to selectively receive the register data from the register data storage unit or the power status data from the power control unit according to the switch signal, and output the selected data.