MATLAB

这是SPSS12统计分析教程（高级篇）(作者：张文彤)书中的有关数据(statistical analysis Guide (Advanced Part 1) (Author : Wen-Tong Zhang) of the data book)

数理统计软件SPSS使用说明，该软件实现功能包括了基本上常用的概率统计方法。(SPSS statistical software for use, the software features include a basically realize the probability of statistical methods commonly used.)

Another book of Atmel Arduino

GPS原理与接收机设计,目前为止是该领域最好的中文入门PDF电子书籍 第1章和第2章将介绍GPS的一些基础知识。 第3章至第6章将介绍GPS定位算法。 第7章至第9章将介绍用来提高GPS定位性能的三方面技术与应用。(GPS principle and receiver design, so far the best Chinese introduction to PDF electronic books in this field)

说明：  吴镇扬老师的数字信号处理教材，内容简介明了，是东大考研的必备材料。也是技术人员学习的重要参考资料。(Zhen-Yang Wu teacher' s digital signal processing textbook, Introduction to understand, is the essential material of Tokyo Entrance Examination. Technical staff is also an important reference for learning.)

多协作中继系统的最优功率分配,北京邮电大学学报论文(More cooperative relay system, optimal power allocation, Beijing University of Posts and Journal Papers)

说明：  这个文档讲述了PLC开发过程的详细情况，是一本国外很经典的参考书籍，对于PLC开发者来说，很不错(This document describes the details of the development process PLC, is a classic reference books abroad, for PLC developers, very good)

XML 高级编程 - 学习研究更高级的 XML 编程，希望能够帮助某些朋友。(XML high-level programming- study and research more advanced XML programming, hoping to help some friends.)

本文通过对男性和女性声音的语音特征的研究，发现男女声的基音频率存在较大的差异，并设计了基于基音频率分析的男女声识别系统。男女声识别系统由以下三个模块电路构成：话筒放大器，低通滤波器，半波整流电路，单片机测量控制模块。话筒放大器采用NE5532P音前置芯片，对语音信号进行放大；八阶低通滤波器MAX293完成基音信号的提取；单片机STC12C5410AD实现频率测量和控制输出功能。经仿真与电路实测，男女声的识别效果良好。(In this paper, the voices of male and female voice characteristics of the findings of a study of the fundamental frequency of the sound of men and women there is a big difference, and the design of frequency analysis based on the pitch of the voice recognition system for men and women. Voice Recognition System for men and women from the circuit the following three modules: the microphone amplifier, low-pass filter, half-wave rectifier circuit, single-chip measurement control module. NE5532P sound using the microphone pre-amplifier chip amplification of voice signals eight MAX293-order low-pass filter to complete the extraction of pitch signal STC12C5410AD single-chip realization of the frequency of measurement and control output. By circuit simulation and measurement, the identification of male and female voices well.)

C_Primer_Plus_4_5 中英文合辑(C_Primer_Plus_4_5_EN_Chinese)