扩展方法来计算数字的阶乘

智能小车源代码,可实现在多种传感器配合下，小车可实现前进、后退、左右转弯、加速减速、避障等功能

：本系统属于小型的局域网监控系统，可以对某一台计算机进行屏幕监控，本系统主要实现以下功能：  系统采用人机交互的方式，界面美观友好。  屏幕信息需要时时显示，网络延时不能大于1秒。  服务器端可以随时运行，只要客户端运行，就能够显示屏幕信息。  系统运行时占用内存不能大于10MB，以免影响系统性能。  客户端运行时需要隐藏显示窗口，起其感觉不到在运行(network monitoring system that can carry out the screen of a computer monitor, the system achieve the following features:  system is the way human-computer interaction, interface, beautiful and friendly.  need to constantly display screen information, the network delay is not greater than 1 second.  server can be run at any time as long as the client runs, will be able to display information.  run-time memory for the system can not be larger than 10MB, so as not to affect system performance.  need to hide the client run-time display window, from its feel in the run.)

fpga_sopc_enc28j60_tcp_ip_测试，源码程序包，本人测试通过！(Fpga_sopc_enc28j60_tcp_ip_ test, the source code packets, I test through!)

An efficient program to do Selection-Sort for vectors in C++!

可缩放的界面编程 通过方便的宏来进行 并且内部控件也能自动调整大小(Scalable programming through a user-friendly interface to the macro and internal controls can also automatically adjust the size of)

可以实现wstring与string之间的相互转化，同时也包括了string与CString之间的转换(Can achieve mutual conversion between wstring and string, but also includes the conversion between string and CString)

说明：  双路输出控制器”具有信号输出时间设定、 输出信号占空比调整、 当前输出通道及时 间显示、系统工作参数存储、串口通讯及 LED 指示等功能。 “双路输出控制器”通过串口完 成信号输出时间设定功能；通过 EEPROM 完成系统工作参数存储功能；通过按键完成输出通 道切换、 输出信号占空比调整及停止信号输出功能； 系统硬件电路主要由 MCU 控制单元、独 立按键、 LCD 显示单元、 串口通讯单元、 EEPROM 数据存储单元和 LED 指示单元组成(Dual output controller has the signal output time setting, adjust the duty cycle of the output signal, the current output channel in time Between display, system operating parameters are stored, serial communications and LED indicator. Dual Output Controller through serial END A signal output time setting function complete system operating parameters via EEPROM memory function complete output pass through the key Channel switching, adjust the duty cycle of the output signal and the stop signal output function the system hardware circuit is mainly controlled by the MCU unit, alone Li buttons, LCD display unit, serial communication unit, EEPROM data storage unit and LED indication units)

快速排斥试验：设以线段 P1P2 为对角线的矩形为 R ， 设以线段 Q1Q2 为对角线的矩形为 T ，如果 R 和 T 不相交，显然两线段不会相交。 (2) 跨立试验：如果两线段相交，则两线段必然相互跨立对方。若 P1P2 跨立 Q1Q2 ，则矢量 ( P1 - Q1 ) 和( P2 - Q1 ) 位于矢量 ( Q2 - Q1 ) 的两侧。 (intersection between line)

说明：  A111 PCR 60GHZ雷达模块代码(A111 PCR 60GHZ radar module code)

深入理解工作者线程与用户界面线程，windows消息机制，多线程之间的消息通信问题。防止mfc编程界面卡死，提高程序效率。