usb_hid_pc_stm32鼠标，键盘USB

正点原子 stm32f10x pwm输出实验(Punctuality atomic stm32f10x pwm output experiment)

TIM4中断延时、TIM1 PWM  、UART1、按键功能

南京研旭DSP2812开发板LCD例程，该例程通过总线控制LCD12864。(The Nanjing Yanxu DSP2812 development board LCD routine,the routine control LCD12864 by bus.)

c# jwt 网络令牌（JSON Web Tokens (JWT)）

实验四 模拟页式虚拟地址转换和缺页中断 实验报告(Experimental four-page simulation and virtual address translation page fault test report)

The (a) section of Figure 1 illustrates the Line Echo Canceller (LEC) residing in the access network where echoes occur. Other voice processing modules, such as Automatic Level Control (ALC) and Noise Reduction (NR), are shown merely for illustration purposes. On the terminal side, both acoustic and electrical echo can occur. If the voice terminal is a speaker telephone set with an open acoustical path from the speaker to the microphone, the effect of acoustical echo is combined with the effect of the network echo. Because there is only a miniscule delay between the electrical signal and its echo, the speaker/listener is exposed to an effect known as side tone. Typically, instead of mounting a LEC at the terminal, side tone circuitry is placed to control the amount of the returned energy. The (b) section of Figure 1 shows examples of echo canceller signals representing the following:

The tracert tool displays the various IP Addresses in the route of a network packet as it travels to a destination IP address from a source. An article which describes how tracert works and which also presents a C# component to implement tracert functionality in your projects can be found here. In the tool presented in this article, I combine the tracert component, technology to geo-locate based on IP address from HostIP.info and the Virtual Earth API to map the locations of various IP addresses that fall in the route of a network packet when it travels to a user provided destination IP address. Since the tracert component is covered thoroughly in the other article let start by looking at geo-location and the MSN Virtual Earth API.-The tracert tool displays the various IP Ad dresses in the route of a network packet as it tra vels to a destination IP address from a source. A n article which describes how tracert works and which also presents a C# component to implement tracert functiona

这个源码是MFC界面对MySQL数据库进行增、删、改等操作

表达式编译器,可编译任何简单表达式。如：（a=2）+3-5等-expression compiler can compile no simple formula. Such as : (a = 2), 3-5, etc.

小型股票交易系统，C++语言实现，用户可以自由扩展(Small stock trading system)