LED

利用定时器产生PWM，使LED灯由亮到灭，由灭到亮逐步变化( Use timer produce PWM, make the light to destroy LED lamp, the gradual change to light out )

LED显示屏的设计可以实现动态字体的左移右移上下移动等功能(LED display is designed to realize the right to move to the left and so on down the function of dynamic fonts)

定义一个Circle类，有数据成员Radius（半径），成员函数GetArea（），计算圆的面积，构造一个Circle的对象进行测试。(caculation the area of a circle)

笔记本键盘测试程序，可以测试键盘按键是否有作用。(Notebook keyboard test program.)

用Visual Basic 6.0 编写的SPY++，功能强大(SPY++ BY Visual Basic)

给大家介绍一个PDF操作的sdk。通过这个sdk你可以直接对PDF文件进行显示、修改、新建及打印(Debenu Quick PDF Library Guide)

本系统以单片机AT89C52为核心,以数模转换器DAC0832实现方波、正弦波、三角波、锯齿波波形的输出，实现信号发生器的简易功能。(This system with single chip microcomputer AT89C52 as the core, with digital to analog converter DAC0832 achieve square wave, sine wave, triangle wave, sawtooth wave form output, realize the simple function of the signal generator.)

本程序利用特征线法计算管道水击的压力和流量(The program uses the method of characteristics to calculate the value of the pipeline water hammer pressure and flow values.)

CC2530 步进电机控制实验。一个简单的例程(CC2530 stepping motor control experiment)

c8051f060中IO口设置的参考程序，用于IO口设置(C8051F060 IO port settings for the reference program, IO port settings)