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说明：  里有原理图、layout等 资料，放心下载(hardware information)

说明：  岩土工程——PFC颗粒流——PFC辅助小程序——图形导入工具(Geotechnical engineering -- PFC particle flow -- PFC auxiliary program -- Graphic import tool)

说明：  ats2825 bluetooth i2s data sheet

说明：  lammps代码与实例，分子动力学模拟氩、铜和铝的熔化与凝固过程(the codes to simulation the process of the melting of Cu, Al and Ar)

这个是Xilinx编程的源码，是Bristol大二时写的．-Xilinx is the programming source code, is sophomore at Bristol writes.

这个是用fortran编写的地球物理反演程序，十分经典。一般很难下载到，因为我是学生，所以才有机会跟老师处获得代码，请大家本着学习的目的使用代码，不要用于商业用途和随意转播(This is prepared by fortran geophysical inversion procedure is very classic. Generally very difficult to download because I am a student, so teachers have a chance to obtain the code, please use the spirit of learning of the code, not used for commercial purposes and not to broadcast)

本程序比较有趣，可以实现不用文件操作输出自己的代码-this program more interesting, can not achieve their document output operation code

发射部分采用锁相环式频率合成器技术， MC145152和MC12022芯片组成锁相环，将载波频率精确锁定在35MHz，输出载波的稳定度达到4×10-5，准确度达到3×10-5，由变容二极管V149和集成压控振荡器芯片MC1648实现对载波的调频调制；末级功放选用三极管2SC1970，使其工作在丙类放大状态，提高了放大器的效率，输出功率达到设计要求。-Part of the launch phase-locked loop frequency synthesizer using technology, MC145152 and MC12022 PLL chips to lock in the exact carrier frequency 35MHz, the output carrier to achieve the stability of 4 × 10-5, reaching the accuracy of 3 × 10-5 by the varactor diode V149 and integration to achieve MC1648 chip VCO FM modulation on the carrier selection transistor amplifier at the end of class 2SC1970, to work in the C state to enlarge and improve the efficiency of the amplifier output power to meet the design requirements.

说明：  利用python中Dijkstra的包，进行最短路径的算法实现过程(Using Dijkstra package in Python to implement the shortest path algorithm)

华为RPR（Resilient Packet Ring弹性分组环）教程，对学习网络路由很有用。-Huawei RPR (Resilient Packet Ring Resilient Packet Ring) tutorial on network routing study useful.