Patent ID: 7710100

Claim:
A motherboard testing apparatus for automatically turning on or off a motherboard, comprising: a pulse signal generating circuit configured for receiving a standby voltage signal at an input terminal, and outputting a pulse signal at an output terminal; a first control circuit having a first input terminal for receiving the pulse signal, a second input terminal, and an output terminal for outputting a first control signal to an I/O controller on the motherboard according to the pulse signal, the first control circuit outputs a low level first control signal when it receives a low level pulse signal, the I/O controller turns the motherboard on when it receives the low level first control signal; and a second control circuit having a first input terminal for receiving the standby voltage signal, a second input terminal for receiving a system voltage signal from the motherboard, and an output terminal for outputting a second control signal to the second input terminal of the first control circuit when the motherboard is turned off by software, the second control signal controls the motherboard to turn on again when the first input terminal of the first control circuit receives the low level pulse signal a next time.