Patent ID: 8120504

Claim:
A circuit for indicating operating status of a plurality of hardware devices of a computer comprising: a detecting module configured to detect an operating status of each of the plurality of the hardware devices, and output state signals of each of the plurality of hardware devices during a power on self test (POST) of the computer; an indicating module comprising: at least one dual color indicator comprising a first input and a second input; and at least two electronic switches, each of the at least two electronic switches comprising an input, and an output connected to one of the first and second inputs of the at least one dual color indicator; and a decoding module configured to decode the state signals, and output control signals to the input of each of the at least two electronic switches; wherein the at least one dual color indicator is shifted between different indicating states to indicate operating status of the plurality of the hardware devices by turning on or off the at least two electronic switches by the received control signals.