介绍QGIS的中文教程,是初学GIS的很好的参考手册.

This a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious. -This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compar

中国象棋MFC源代码：利用MFC编辑中国象棋的操作界面，编辑非常直观的人机界面-mfc

程序员 C、C++ 笔试面试宝典2009版 总结得很全面-Programmer C, C++ written examination and interview Collection 2009 edition of a very comprehensive summary

ARM嵌入式电子教程PPT课件，武汉创维特公司出品。-ARM Embedded Electronic Directory PPT courseware, Wuhan Skyworth special produce.

perl快速入门。由浅入深，循序渐进。中文教程。-A quick entrance to study perl

keil的使用说明,是应用keil较好的文本手册。-the manual of the keil software

北大计算机系JAVA培训讲义(经典)-Beijing University Department of Computer training lectures JAVA (classical)

《matlab编程百例》光盘代码31-35-"Matlab programming hundred cases" CD-ROM code 31-35

计算机网络第四版，安德鲁S.塔南鲍姆，普伦蒂斯大厅

多功能计算器，不但实现基本运算器，还能实现相关公式的计算-Multi-function calculator, not only for basic computing device, but also achievement of the relevant formula for the calculation of