it can help you use C++ program we

一个与一个低通滤波器结合可以用作简单、廉价的数/模转换器。其输出可用于驱动电压控制器件，或用于需要模/数转换器采样受控参数的反馈控制系统中。PWM常用于电机控制系统中。-A combination of a low-pass filter can be used as a simple, low-cost D/A converter. The output can be used to drive voltage control devices, or for the need for A/D converter sampling the controlled parameters of feedback control systems. PWM motor control commonly used in the system.

用VB实现USB功能，主要是通过调用EasyD12.dll动态连接库函数,控制USBU端对 DP-51学习板24WC02时行读写控制。-VB USB functions, mainly through call EasyD12.dll DLL function, USBU-right control of DP-51 learning at the plate WC02 24 firms control read and write.

  Dim xs As Integer   Dim ys As Integer   Dim alph As Single   Dim lng As Single   Dim m As Integer   Const PI As Single = 3.14159265 Private Function tree(x As Integer, y As Integer, angle As Single, length As Single, n As Integer)     Dim x0 As Integer   Dim y0 As Integer   Dim alpha As Single   Dim beita As Single   Dim leng As Single   BackColor = vbWhite     If n > 0 Then     x0 = x + Cos(angle) * length     y0 = y - Sin(angle) * length     picture1.Line (x, y)-(x0, y0), vbbrake     alpha = angle - PI / 8     beita = angle + PI / 8     leng = 2 * length / 3         Call tree(x0, y0, alpha, leng, n - 1)  &nbs

这个程序是软时钟程序,如果你不用硬时钟,可以使用这个程序-This procedure is soft clock procedure, if you do not have the hardware clock, you can use this procedure

从输入文件如in.txt读取数据，经com1端口发送（自发自收），收到的内容存入输出文件如out.txt。 在按键后启动发送，并开始计时，发送完毕后，结束计时，并显示发送所花时间。

MenuetOS is an Operating System in development for the PC written entirely in 32/64 bit assembly language. Menuet64 is released under License and Menuet32 under GPL. Menuet supports 32/64 bit x86 assembly programming for smaller, faster and less resource hungry applications. Menuet has no roots within UNIX or the POSIX standards, nor is it based on any operating system. The design goal has been to remove the extra layers between different parts of an OS, which normally complicate programming and create bugs.

主要用于LCD的驱动,还有一些关于它的资料,等以后再传上来,它是驱动128*64大小的LCD,相当有用,也相当有价值,使用起也很简单!-mainly used for LCD driver, and some information about it, such as after a tame onto, it is 128* 64-size LCD, very useful and very valuable, since use is also very simple!

很好玩的拼图游戏~本软件可以轻松实现~欢迎下载-the picture arrangement game is a lot of fun-the software can be easily downloaded welcome achieve ~

彩灯程序,控制树林的生长和心字的闪烁和重复闪烁-Lantern procedures, control of forest growth and the heart and repeat the word flashes flicker

这个源代码是可运行的。-the source code can be run.