PCB比较,是一款不错的文本比较软件,适合PCB工程师使用

3U时隙交叉设备原理图，PCB。漫游短信欢迎系统(信令采集设备部分)培训资料-Schematic cross-slot 3U equipment, PCB. Welcome to SMS roaming system (part of the signaling equipment acquisition) training materials

33个毕业设计---单片机类(包含论文、源代码、个别的有PCB)-33 Graduation--- SCM classes (including articles, source code, there are individual PCB)