modbus slave programs MODBUS RTU从站 源程序

51单片机P2口接4*4键盘的行线和列线；红灯亮时进行频率输入；绿灯亮时进行占空比输入；频率值暂定在100到60KHZ之间；输入频率和占空比时要输够六位整数，不够的在前面补0；占空比以百比数（0-100）形式存在。-51 Singlechip P2 mouth then 4* 4 keyboard line and column line red light when the frequency of input green when the input duty cycle frequency value is tentatively scheduled for between 100 to 60KHZ input frequency and duty than enough to lose six integers, not enough to fill in front of 0 duty cycle than a few hundred (0-100) form.

利用51单片机控制红外遥控的发射部分的程序，该程序在51单片机的基础上，采用一定的协议，进行编码、调制和发送等，具有很实用的价值。-51 SCM control the use of infrared remote control transmitter of the program, the program in MCS-51, based on the use of certain agreements, coding, modulation and delivery and so on, have a very practical value.

基于单片机C51和LCD1602的显示《将近酒》的程序-C51-based single-chip microcomputer and the LCD1602 display

利用stc12c2052单片机测量空气质量的-use stc12c2052 SCM measurements of air quality

应用actel公司的a3p030进行调试通过的LCD1602显示程序 可以应用此程序进行网站显示 等-Application a3p030 company actel debug LCD1602 display program adopted this procedure can be applied to web display.

用C语言编写的交通灯上的程序，这里只取出了读取8563的一段程序。-Using C language programs on the traffic lights, only one out of the reading section of procedures for 8563.

关于8051单片机的学习，汇编和C语言编程。-On the 8051 study, compile and C language programming.

采用Maxim公司的Max267芯片实现的滤波电路 欢迎下载-using Maxim"s Max267 chip welcome the filter circuit download

the low voltage Flash Atmel AT89C52 and AT89LV52. Keil Software, - the low voltage Flash Atmel AT89C52 and AT89LV52. Keil Software,

callback demo program, you can learn how to write callback functions