C #源代码为图像压缩工具，技术开始

工程教育中级练习题1：按一下K1键，LED以10Hz频率闪烁，屏幕上画出红圈，跟着闪，放开后保持该频率闪烁；长按K1键超过3秒，LED以5Hz频率闪烁，屏幕上画出红圈，跟着闪，放开后保持该频率闪烁；按一下K2键，LED熄灭；按一下K2键，LED常亮。(Secondary Exercise Question 1 in Engineering Education: Press the K1 key, the LED flickers at 10Hz frequency, draw a red circle on the screen, follow the flash, and keep the frequency flickering after release; Press the K1 key for more than 3 seconds, the LED flickers at 5Hz frequency, draw a red circle on the screen, follow the flash, and keep the frequency flickering after release; Press the K2 key, the LED goes out; Press the K2 key, the LED always shines.)

说明：  用VS2010做的MFC界面的状态栏或者字幕的滚动(Use VS2010's MFC interface status bar or subtitle scrolling)

本代码使用C#语言实现了RSA和DES算法，其中通过分段处理的方式解决了RSA对较大数据的加解密。(This code block implements the algorithm of RSA & DES,and we resolved the encryption and decryption of data with large size on RSA by segmental processing.)

串口调试程序源代码，本例作为学习串口编程具有很好的参照作用。(Serial debugger source code, in this case as a learning serial programming with a good reference to the role.)

用VS2005编写的MDI文档，基本跟操作系统XP中的写字板一样的-MDI documents written using VS2005, the basic operating system, XP, WordPad with the same

关于怎样用C#语言关闭计算机的代码・・・希望大家交流・・和学习-On how to use C# language wish to shut down the computer code to facilitate the exchange and learning

EEPROM 多位地址数据随机，连续读写(I2C protocol between C51 MCU and EEPROM)

一个简单的网络视频电话系统，仅供学习交流(A simple network video telephone system for learning communication)

使用STM32单片机的定时器与DA采用查表法直接产生频率，幅度，偏置可调的正弦波做为频率源。频率精度在10000Hz以下的精度为千分之二。

说明：  根据心电波形数据.ecg文件,在标准距离的网格下绘制绘制心电图，达到检测心电数据是否正常的结果(Drawing ECG according to ECG waveform data)