一个用AVR 单片机开发的工程实例，应该对同行有很大帮助

与C51相关模块LCD,24CXX,等的源代码程序-associated with the C51 LCD module, 2 PROM, the source code procedures

仪器仪表键盘显示模拟系统，用AT89S52芯片作为系统的CPU，控制系统的按键及显示器部分。用8路同相三态双向总线收发器74LS245芯片驱动LED。4X4矩阵键盘作为系统人机交互的重要部分，用于向单片机应用系统输入数据或控制信息，设计4X4矩阵键盘分别对应键码“0-F”。系统可以实现的基本功能包括开机LCD液晶屏幕显示“大专05电子信息X班XXX毕业设计”信息；按下任意一个按键，LCD液晶屏幕显示相应按键的信息。在基本功能的基础上还增加了一个扩展功能，即增加一个LED数码管同步显示相应键码-Show the simulated keyboard instrumentation systems, using AT89S52 chip as a system CPU, system control buttons and display parts. With 8-phase three-state bidirectional bus transceiver 74LS245 chip-driven LED. 4X4 matrix keyboard system as an important part of human-computer interaction, single-chip microcomputer application system used to input data or control information, the design of 4X4 matrix keyboard key code corresponding to

AVR单片机下的mmc卡控制程序，包括系统SPI模式初始化，使卡进入SPI模式及检测等-AVR cards under the VAT control procedures, including the systematic SPI mode initialization, access cards and SPI mode detection

使用AT89C51模拟SPI接口驱动ADS7835进行AD转换-use AT89C51 simulation SPI Interface Driver ADS7835 for AD conversion

LCD12864程序及Protues仿真-LCD12864 procedures and Protues Simulation

m128 接 gsm modem 用pdu 发中文短信 的流程。自己总结的，附带源码，仅供参考哦-gsm modem access m128 made by Chinese SMS pdu process. Their own summary, with source code, for reference only, oh! !

英飞凌C166之XC164CS开关SWITCH程序-Infineon C166 procedures of XC164CS switch SWITCH

usb slaver for sd card

自己使用AHDL语言编写的24位累加器.主要使用于DDS-24bit_acc

点阵LCD的驱动原理.绝对的精品.望给初学者以帮助-Dot matrix LCD driver principle. Absolute quality. Look to the beginners in order to help