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说明：  基于51单片机实现单片机的IO口输出PWM波形，实现呼吸灯的制作。(Based on 51 single chip computer, the output of PWM waveform from IO port of single chip computer is realized, and the manufacture of breathing lamp is realized.)

I2C总线协议，对学习及如何使用I2C协议进行模拟开发有一定的帮助(I2C bus protocol on learning and how to use the I2C protocol to simulate the development of a certain degree of help)

简单的点阵程序，在一个16*16的点阵上显示一个汉字-A simple dot-matrix procedure, a 16* 16 dot matrix display a Chinese character

说明：  一个企业管理系统，包括增删查改，文件上传与下载，值日人员管理等(An enterprise management system, including add, delete, check and modify, file upload and download, on-duty personnel management, etc)

说明：  VC++增强版电子标尺软件的源代码，透明窗体的实现是本程序的关键性技术，本标尺采用两点测量、多点测量、多角度测量的方法，配合窗体透明特效，完成一个逼真好用的电子标尺，这样，当你在网页上需要确定图片及媒体的宽度和高度时，就可用这个软件轻松的量出它的尺寸了。 (Enhanced version of VC++ source code of the software electronic scale, transparent form of implementation is the key technology of this procedure, the use of two measurement scale, multi-point measurement, multi-angle measurement method, with transparent window effects, to complete a real good using electronic ruler, so that when you need to determine the picture on the website and the media width and height, you can use this software easily measure out the size of it.)

the data encreption and decription is used to send the data from one plece to another place in a secrete code manner this is usefull in military applications

HTML5 Canvas红色灯笼时钟动画，红色风格，网页时钟，根据电脑时间走时。(HTML5 Canvas Red Lantern Clock Animation, Red Style, Web Clock, according to computer time travel time.)

VC++压缩文件的几个例子，一共收集了8个常用的数据压缩的示例代码，格式是文本文件，你可以直接将扩展名改为C文件运行。包括：arith-n.cpp - order-n arithmetic coding module：low_count 和 high_count 唯一地定义了在 0 到 1 范围中符号的所在位置，scale 指 0 到 1 范围内的总量程，即有多少字符要记数……

使用keil5编写的STM32输出四路互补的PWM，适配正点原子的mini版，同样是为电赛逆变系统做的准备。通过定时器的输出比较模式，在PC6~PC9，输出4路PWM，每路PWM频率为500Hz，占空比为50%，每一路PWM相位差为45°(The STM32 output four complementary PWM, which is written in keil5, is suitable for the mini version of the positive point atom, which is also the preparation for the electric match inverter system.Through the output comparison mode of the timer, in PC6~PC9, the output 4 road PWM, the PWM frequency of each road is 500Hz, the duty ratio is 50%, and the PWM phase difference of each road is 45 degrees.)

PIC16F676 based solar charger