Patent ID: 7015714

Claim:
A testing device for testing a printed circuit board comprising: a testing signal converting module comprising a computer connector for receiving testing signals, and a converting circuit coupled to the connector; a switching circuit comprising a VGA (Video Graphic Array) display test, an AGP (Accelerated Graphics Port) display test and an auto-switching circuit, the auto-switching circuit switching the VGA display test to the AGP display test; a first testing circuit for detecting chassis ID (Identification), the state of HDD (Hard Disk Driver) LED (Low Emitting Diode) as well as power LED; a second testing circuit for testing audio quality, the second testing circuit comprising a line out/line in circuit for a headphone test, a mic-line (microphone-line) in circuit for a microphone test and a cd-in-speaker (compact disk-in-speaker) circuit for a cd-speaker test; and a third testing circuit for comparing a voltage of a battery of the printed circuit board with a normal voltage, the third testing circuit comprising a control circuit of battery normal voltage and a comparator coupled to the control circuit of battery normal voltage; wherein the testing signal converting module converts the testing signals into compatible signals and outputs the compatible signals to the switching circuit, the first testing circuit, the second testing circuit and the third testing circuit, respectively.