自己在keil51中用C实现了一个电子钢琴展览项目，cpu用P89V51RD2，完全自己写的代码...

T9输入法， 可 以用在手机或者单片机系统中需要显示汉字的场合，节省键盘数，--T9 Chinese input method. It could be used in mobile phone or SCM systems which need to show Chinese characters.

ATmaga128 串口通信程序 （可实现收发数据和字符串）-ATmaga128 serial communication program (which can send and receive data and achieve string)

用于MAX187的12位AD 转换程序,附带1602液晶驱动函数-For MAX187 12-bit AD conversion process, with 1602 LCD driver function

本代码是本人毕设所做的GPRS数传系统的软件部分，实现了PPP，UDP，IP协议的分层和打包，实现了嵌入式设计中的UDP/IP协议栈-the code is completed, I set up the GPRS data-transmission system software, to achieve the PPP, UDP, IP protocol layering and packaged to achieve the design of embedded UDP/IP protocol stack

对16*2字符型点阵驱动的C51代码，已经在拓普微上测试通过。

5l 系列单片机为许多控制提供了高度灵活和低成本的解决办法。充分利用他的片内资源，即可在较少外围电路的情况下构 成功能完善的超声波测距系统-5l Series single-chip control for a number of highly flexible and cost-effective solution. Make full use of his resources-chip can be less the case of the external circuit constitutes a function of the ultrasonic ranging system to improve

无线传感器网络低占空比MAC协议研究 介绍MAC协议-mac protocol

it can be used to learn programing for 51

外部计数+显示程序 功能： 单片机外部输入脉冲信号，定时器参与计数 计数值由数码管显示出来。-External count+ display program features: MCU external input pulse signal, the timer counts involved in counting by the digital tube display.

这是MC9S12DG128单片机SPI通讯模块开发实例,该实例包含SPI主从机的全部源代码,可实现双机通讯。-This is the MC9S12DG128 MCU SPI communication module development instance of SPI master and slave machines with all the source code, enabling two-machine communication.