显示系统时间，按秒更新。用DateTime.Now实现。

direvctX最初框架，供添加具体代码(directX )

增强型实验板配套例程库DS18B20-液晶1602显示温度和控制(Enhanced experimental board supporting routine library DS18B20-LCD 1602 display temperature and control)

精通Matlab与C_C++混合程序设计.rar 是精通Matlab与C_C++混合程序设计 这本书的配套源码(Proficient in Matlab and C_C++ Mixed program design. Rar is proficient in Matlab and C_C++ Mixed programming matching this book source)

说明：  兼容飞鸽传书vc版本，C#开发的，实现文件传书和即时通讯(Compatible with the vc version of the Flying Pigeon Book, developed by C#, to achieve document circulation and instant messaging)

说明：  MPU6050互补滤波，得到俯仰角与横滚角，配合匿名上位机程序(MPU6050 Complementary filtering, get pitch angle and roll angle, cooperate with anonymous upper computer program)

详细讲述了直接序列扩频差分锁相环的文章，包含具体的算法结构，并附有仿真结果。(A novel differentially coherent delay-locked loop(DCDLL) for accurate code tracking is proposed for direct sequence spread spectrum systems. Due to the use of the differential decoder and exactly one correlator, the proposed scheme avoids the problems of gain imbalance. The tracking error variance is derived by linear analysis. When the proposed DCDLL scheme is applied in ranging with additive white Gaussian noise (AWGN) channel, the performance of the proposed DCDLL scheme is about 1.4 dB better than that of one-correlator tau–dither loop (TDL), and near that of noncoherent DLL.)

模拟航空航班订票系统 。大一新生数据结构期末大作业参考必备

说明：  pic单片机,链接描述文件（*.lkr）含义 (pic microcontroller, Link description files (*. lkr) the meaning of)

鼠标窗体穿透效果，像是在窗体上加了一个遮罩层，但是鼠标又可继续操作，详见截图

说明：  熟悉keil4的使用，掌握基本功能，为编程打基础(Familiar with the use of Keil 4)