Control Systems Engineering 7th Edition 2015

datasheet for G-LCD type:gdm12864a

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.)

龙芯CPU+IP+资源简介，希望大家能够了解自己开发的芯片。(Godson CPU+ IP+ Resource profile, hope that we can understand their own chips.)

UPC1270H.PDF 功能强大的功放驱动IC,可容易组装DIY功放.(UPC1270H.PDF)

说明：  Profibus现场总线智能从站通信接口设计.使用SPC3芯片(Intelligent Profibus fieldbus slave communication interface design. SPC3 chip to use)

IT3100 HARDWARE MANUAL

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.)

详细介绍Ubuntu Linux的安装过程和方法，以及一些基础的配置方法。是Linux初学者的首选。(Details of Ubuntu Linux installation process and methods, as well as some basic configuration. Is the first choice for Linux beginners.)

C C++ interview Questions and Answers

中国卫生信息数据元值域代码,卫生信息数据元值域代码.(Range of health information data element code range of health information data element code)