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请问TI绘制cc2540DK 和em还有usb-dongle的原理图和PCB是用什么软件，版本是多少？
可以用CADSTAR 打开试试 http://www.zuken.com/en/products/pcb-design/cadstar
您可以将pcb文件用记事本方式打开，可以看到文件是用CADSTAR打开的
Altium Designer 和CADSTAR都可以，版本的话，推荐用最新版
