Ebedded computer system

The embedded computer system based on COMPACT PCI structure includes one back board, the first system mainboard, the second system mainboard and one power supply/control board, and the two system mainboards and the power supply/control board are inserted in the slots of the back board. The two system mainboards are backed up mutually, and the system controls the signal level vian its control logic in the power supply/control board so as to control the master-slave relation between two system mainboards. The present invention adopts design and reconfiguration technology based on COMPACT PCI bus structure, redefines the COMPACT PCI specification and has starting chip BOOTROM BAK in the power supply/control board for starting back-up, so that the computer system has raised processing capacity and performance and raised stability.