43550038Matlab-based-design

This is answer for the SSD1 certification exam.

ISO14230-1 specification

pdf book for Optical Communication Function

Another book of Atmel Arduino

说明：  golang 1.5 源码分析, 详细解析了golang的内存分配、协程等(golang 1.5 source reading book)

西门子仿真编程软件S7-PLCSIM V5.4，用于S7-300/400系列PLC程序的仿真(S7-PLCSIM V5.4 offers the following new features with this release: DP, Industrial Ethernet and PC Internal connection types supported in addition to MPI Formerly, S7-PLCSIM used a default connection of MPI, address 2. With S7-PLCSIM V5.4, you can browse STEP 7 projects and select a networked node for establishing a simulation connection. S7-PLCSIM simulates the CPU of the selected node, all nodes that belong to that CPU, and the subnet of the selected node. Increased number of blocks supported for simulation S7-PLCSIM supports a set of OBs, SFBs, and SFCs as described in the electronic manual and online help. Of these, some are NOPs that is, they do not perform any operation. With S7-PLCSIM V5.4, the number of blocks that are not NOPs has increased.)

求解NS方程的各种rans方法及直接数值模拟方法介绍 很好的PPT(A very good solver introduction of the ns equation，rans method, dns.)

说明：  Python Cookbook第三版书籍(Python Cookbook,the third book)

正则表达式，精通正则表达式，第三版，非常好的学习正则表达式的书籍(Regular expressions, mastering regular expressions, Third Edition)

说明：  关于电子设计方面的一些知识，希望对大家有帮助(On some knowledge of electronics design, we want to help)