SKY 2440的开发板原理图（底板），包含PCB文件，PCB文件完整，可以使用的-SKY 2440 development board schematic diagram (bottom), contains the PCB document, PCB file integrity, you can use the

天嵌2440 pcb原理图,及pdf altium designer 打开-tianqian 2440 PCB principle diagram embedded, and PDF altium designer open