改变系统时间的实现

本书介绍了红外线发射与接收器件及超声波传感器的基本知识、选用和测试方法、电路的设计技巧,提供了几十个新颖而实用红外线和超声波遥控电路。-This book describes the infrared transmitter and receiver devices and ultrasonic sensors basic knowledge, selection and testing methods, circuit design techniques, providing dozens of new and useful infrared and ultrasonic remote control circuits.

StandardCplusplusProgrammingAFundamentalLook atTypeConversions1

C_C++常见bug的书-3，对于调试中碰到的问题很有帮助-C_C common bug book-3 for debugging problems they encountered in helpful

面向软件工程的Visual C++网络程序开发-Oriented software engineering, Visual C++ Network program development

C++教程-C Guide

数据结构习题集（严蔚民）是扫描版本的 怎么还是上船不鸟呢？-Data Structure Exercises Set (YAN Wei-Min) is a scanned version of how the birds do not still on board?

Freebsd安装的录像，看完自然就会了，对于刚开始学习Freebsd的战友很有帮助的。-Freebsd installation of video, reading naturally, For just started learning Freebsd comrade-in-arms very helpful.

my SQL中文版-my Chinese version of SQL

本文档是（作者：钱能）《C＋＋程序设计教程》系列的部分辅助代码。 选题编辑：张朝阳 责任编辑：徐培忠、林庆嘉 有关代码的具体问题请与作者联系。-(Author : Money can), "C++ Programming Guide" series of some of the auxiliary code. Topics Editor : Zhang Chaoyang Editor : Xupeizhong, along she"s the code of specific issues, please contact the author.

本软件是一个运行在Penbex OS (v1.3)上的绘制函数图像的工具。用它可以绘制平面直角坐标系下的显函数和隐函数的图像。与大部分绘制函数图像的软件不同，用本软件不但可以绘制隐函数的图像而且对隐函数的复杂程度没有限制。不过，绘制复杂隐函数的图像将花费相当长的时间，因此，请尽量以 y=f(x) 这样的显函数的形式输入函数的表达式。另外，以直观的“数学形式”显示函数的表达式也是本软件的一个特色。-the software is running on a Penbex OS (v1.3), the mapping function Image tool. It can be used mapping plane rectangular coordinate system and the significant function implicit function images. With the majority of the mapping function images of different software, use the mapping software can not only implicit function of the hidden images and the complexity of functions without restrictions. However, the implicit function mapping complex image will take a very long time, so please try to y = f (x) such a significant function in the form of the expression input function. In addition to the intuitive "mathematical form" showed the expression function of the software is also a feature.