51单片机写的程控滤波器，是07年电子大赛的 很多功能没有实现 望高人改正...

avr c使用手册，帮助初学者能够快速的了解avr系列的单片机-avr c user manual, help beginners to quickly understand avr microcontroller series

nrf905无线开发 调试原代码 和51通信-Wireless Developer nrf905 debug the original code and 51 communications

采用反正法扫描方法对4X4矩阵式按键进行扫描，判断是哪个按键按下。-Scanning method used in any case law on the 4X4 keypad matrix scan to determine which keys are pressed.

模拟串口C51编程-simulation C51 Serial Programming

标准IIC协议通信程序，能读写EEROM、实时时钟，使用方便，可靠！-Standard IIC protocol communication procedures, can read and write EEROM, real-time clock and easy to use, reliable!

CAN控制器SJA1000的标准帧，BsaicCAN模式，调好的初始化、发送、接收底层程序，大家共享。-CAN controller SJA1000 standard frame, BsaicCAN mode, tune good initialization, send, receive the bottom of procedures, for all to share.

此程序为AD9850（DDS）直接数字频率合成器C语言源码。用125M的有源晶振，频率无失真输出可达到40M。该程序包括FYD12864LCD显示程序加4X4矩阵键盘扫描，可步进1M，1K，和任意频率输入。及相位设置。-This procedure for the AD9850 (DDS) Direct Digital Frequency Synthesizer C language source code. With 125M active crystal, the frequency output can be achieved without distortion 40M. The process includes the display program FYD12864LCD plus 4X4 matrix keyboard scanning, may be stepping 1M, 1K, and arbitrary frequency input. And phase settings.

430 149的PDF，是一片基本的430单片机，价格便宜，适用于初学者-430 149 of PDF, is a basic single-chip microcomputer 430, cheap, applicable to beginners

本设计提供了通过单片机来控制温度测量芯片18b20，进行测量温度-This design through the single-chip microcomputer to control the chip temperature measurements 18b20, measured temperature