| 摘要 |
A circuit for preventing a computer from being powered on before a CPU of the computer has been properly installed, the circuit includes a power supply ( 70 ) for the computer, a controller ( 60 ) connected to the power supply configured for controlling the power supply, a switch ( 10 ) exposed outside the computer for convenient operation, and a switching device (Q 1 ). The controller includes a terminal for receiving a computer startup signal. The switch is connected to the terminal of the controller for sending the computer startup signal to the controller when the switch is triggered, wherein when the computer startup signal is sent to the sensing terminal of the controller, the controller controls the power supply to provide power to the computer. The switching device includes a control terminal configured for sensing if the CPU is installed to control conduction of the switching device.
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