IAR例子，里面是一个完整的串口异步通讯例子。

基于51系列单片机的串口通信测试程序，希望对大家有帮助-Based on 51 Series Single-chip serial communications test program, and they hope to have everyone help

基于philips的932单片机的LIN总线程序开发，通俗易懂，简单实用-based on the Philips 932 SCM LIN bus program, accessible, simple and practical

该程序是用单片机C51语言编写的关于步进电机控制的程序，里面包含了详细的说明，对于初学者有很好的帮助！

51的4*4键盘驱动当按键按下时返回一个值，且只在按下键时返回一次该值，之后返回0；无按键时返回0；包含消抖功能，在键盘的下降沿触发。 基于keil平台-51 4* 4 keyboard driver when the button is depressed to return a value, and press the button only once the value to return, followed by return 0 no keys to return 0 contains extinction Buffeting function, the falling edge trigger at the keyboard. Keil-based platform

2812原理图，对初学者有很大的帮助，尤其刚开始玩2812对硬件不熟的朋友-2812 schematic diagram of great help for beginners, in particular, began playing a friend unfamiliar with 2812 pairs of hardware

用proteus仿真的数字电压表 有8051单片机和adc0809以及4位数码管实现-Proteus simulation with digital voltage meter 8051 and has adc0809 as well as four digital tube realize

红外线的解码驱动程序，用于单片机对遥控器等发出的红外线进行解码接收-Infrared decoder driver for single-chip, etc. on the remote control infrared receiver to decode

基于51单片机系统，实现能用接口1602 LCD的显示现控制。电脑主机通过串口给51发送控制指令，51根据指令对LCD进行相应的控制与显示操作。编程环境：Keil-Based on 51 single-chip system, 1602 LCD interface can display the current control. Mainframe computer through the serial port to send control commands 51, 51 follow the instructions on the LCD for the corresponding control and display operations. Programming Environment: Keil

功能： 1、作为下位机采集8255数据并将此数据通过通讯送出，传输十路 2、采集数据为BCD，不处理后 3、通讯采用方式一-Features: 1, as under the 8255-bit machine data collection and data communications sent through the transmission path 2, 10, collecting data for the BCD, not after 3, means of communication using a

基于Profibus_DP现场总线的电能表设计-Profibus_DP fieldbus-based energy meter design