Abstract: A fan control circuit comprises: a fan controller connected with at least one fan connector, connected with a baseboard management controller (BMC) via integrated circuit bus communication lines and outputting a BMC fan signal wherein said fan controller is powered by a main power supply, and a baseboard status detection circuit connected with the BMC and the fan controller respectively, detecting a heartbeat signal of the BMC, and controlling an output of a fan pulse signal according to the heartbeat signal so as to control a fan connected with the fan controller to operate normally.

Abstract: This disclosure provides a hardware structure of a trusted computer, which comprises: a trusted socket and a trusted module compatible with TPM and TPCM specifications; a trusted management module connected to the trusted socket for measuring the credibility; a firmware memory of BIOS connected to the trusted socket. A firmware memory of BMC connected to the trusted socket through a switch module. When the trusted management module is in the standby status, the trusted management module measures the credibility of the firmware memory of the BIOS and the firmware memory of the BMC according to the output signal of the trusted module inserted to the trusted socket, and the computer is allowed being turning on as the measurement is pass. This disclosure further relates to a trusted booting method for a computer.

Abstract: This disclosure provides a hardware structure of a trusted computer, which comprises: a trusted socket and a trusted module compatible with TPM and TPCM specifications; a trusted management module connected to the trusted socket for measuring the credibility; a firmware memory of BIOS connected to the trusted socket. A firmware memory of BMC connected to the trusted socket through a switch module. When the trusted management module is in the standby status, the trusted management module measures the credibility of the firmware memory of the BIOS and the firmware memory of the BMC according to the output signal of the trusted module inserted to the trusted socket, and the computer is allowed being turning on as the measurement is pass. This disclosure further relates to a trusted booting method for a computer.

Abstract: A fan control circuit comprises: a fan controller connected with at least one fan connector, connected with a baseboard management controller (BMC) via integrated circuit bus communication lines and outputting a BMC fan signal wherein said fan controller is powered by a main power supply, and a baseboard status detection circuit connected with the BMC and the fan controller respectively, detecting a heartbeat signal of the BMC, and controlling an output of a fan pulse signal according to the heartbeat signal so as to control a fan connected with the fan controller to operate normally.

Abstract: A control system includes a first expander board and a second expander board. The first expander board selects a first data segment from a first data signal according to a first clock signal. The second expander board is electrically connected to the first expander board. The second expander board is configured to receive the first data segment and the first clock signal of the first expander board. The second expander board selects a second data segment from a second data signal according to a second clock signal and sequentially outputs the first data segment and the second data segment. The sequentially output form of the first data segment and the second data segment from the second expander board is a serial data signal.

Abstract: A protective case with a function of clearing and cleaning a display screen of an electronic device includes a case body, a clear component, and a mounting component. The case body defines a receiving space in which the electronic device is held and an opening at one end of the case body. Two opposite slide grooves are provided in the case body. The clear component on the mounting component can be pushed from an end of the case body along the display screen of the electronic device, to clear and clean it.

Abstract: A protective case with a function of clearing and cleaning a display screen of an electronic device includes a case body, a clear component, and a mounting component. The case body defines a receiving space in which the electronic device is held and an opening at one end of the case body. Two opposite slide grooves are provided in the case body. The clear component on the mounting component can be pushed from an end of the case body along the display screen of the electronic device, to clear and clean it.