基于C51单片机的多机串口,MODBUS协议通讯的实现方法.

* 功能：使用PWM6输出PWM信号，通过滤波电实现DAC转换。由KEY1控制PWM的占空比， * 每按一次按键将会改变一次PWM的占空比。 * 说明：使用示波器观察测试点PWM和PWMDAC。-* Function: Use PWM6 output PWM signal, by filtering electrical realize DAC conversion. Key1 controlled by the PWM duty cycle,* every time a button will change the PWM duty cycle.* Note: Use the oscilloscope to observe test points PWM and PWMDAC.

IC模块读写程序，经过很长时间使用，没出一点问题，目前看是非常不错的-IC module to read and write procedures used after a very long time, did not get out of difficulties, the current situation is very good

430单片机和液晶的接口方案，此方案在设计比较独到，很好解决了电平兼容的问题-430 microcontroller and LCD interface program, this program relatively unique in design, very good level to solve the compatibility problem

x5045的应用程序，多初学的朋友很有帮助！-X5045 applications, and more helpful beginner

单片机TCP/IP源代码-SCM TCP/IP source code

单片机485 CAN-bus-RS485CAN.pdf-Single-chip 485 CAN-bus-RS485CAN.pdf

isd4004语音,我实验过,成功,欢迎下载!-isd4004 voice, my experiments have been successful, welcome to download!

基于单片机的AD转换器，可以用proteus进行仿真-The AD converter based on single chip, you can use proteus simulation

自已编的程序.能通过RS485总线更新单片机中的应用程序,带一程序流程图和一些说明希望能对大家有所帮助!-Made their own procedures. Through RS485 Bus update MCU applications with a process flow chart and some that I hope can be helpful to everyone!

Protel 99中的快捷键 非常好用 -Protel 99 in very handy shortcut keys