a tutorial about bank switching in 8051.

ACE自适配通信环境程序员教程，介绍ACE结构以及各进程的访问与调用-Adaptive Communication Environment ACE Programmers Guide, the structure of ACE, as well as introduce the process of access and call

网络编程 RT8139d 网络芯片资料-network programming RT8139d information network chips

C++ Basic Tutorial, for beginners into programming in C-C++ Basic Tutorial, for beginners into programming in C++

这是uboot在AT91RM9200上的全线移植文档，很宝贵哦!-This is the uboot in the entire transplant AT91RM9200 document, very precious, oh!

很好的网上书店系统,欢迎下载参考-a very good bookshop，it is very easy to learn.

这是一本Objective-C语言教程，写的很详细-This is an Objective-C language tutorial, written in great detail

thuat toan vuong hao

介绍photoshop的使用技巧，内容和例子都很丰富，是图像处理人员的经典辅助材料-introduced the use of photoshop skills, content and examples are abundant, Image processing is the classic supporting materials

不可多得的xml学习资料-rare xml learning materials

关于OpenMP性能调优的资料，更深一步学习如何提高程序性能。主要掌握了循环互换，循环展开和循环合并等方法，和缓存的一致性来解决共享变量带来的负荷，了解了线性递推（Linear Recurrence）和如何用分块提高矩阵的更新效率。 -On the OpenMP performance tuning information, deeper to learn how to improve program performance. Main mastered the loop interchange, loop start and loop merging and so on, and cache consistency to solve the shared variables to bring the load to find the linear recurrence (Linear Recurrence), and how to block updates to improve the efficiency of the matrix.