用AT89C2051实现程序A/D转换程序，用PWM模拟输出。

倒计时器 A51源程序 -countdown for A51 source

AVR 单片机入门必读文档，内容精要，图文解说。-AVR single-chip entry-must-read document, the contents of the essence, graphic explanations.

DS1302始终芯片操作原代码，包括PROTUES仿真-DS1302 chip has always been to operate the original code, including simulation PROTUES

avr m128 双串口通讯,实现数据的转发功能,晶振为11.0592MHz,波特率为96-avr m128 dual serial communications, data forwarding function, crystal for 11.0592MHz, baud rate of 96

用89c2051模拟产生dtmf信号，广泛用于防盗报警、电话数据传输等；节省发号及收号电路，成本低。-with 89c2051 simulation of DTMF signals, widely used in anti-theft alarm, telephone data transmission; Savings and resumption of the circuit, and low cost.

自制MP3硬盘播放器，含电路图（DDB）以，源代码及使用说明-Self-made hard drive MP3 players, including circuit diagrams (DDB) to, source code and use

频谱仪锂电池电量表,非常适合学习和使用单片机开发的人用-Spectrum Analyzer Table lithium battery, very suitable for the learning and use of single-chip developed with

刚学了一点上位机控制,感觉这个程序不错,适合初学者,与大家共享!-Just learn to control that PC, I feel pretty good this procedure is suitable for beginners, with everyone sharing!

单片机的　家用投影机电脑型控制板　Ｃ语言的　可以控制投影机-SCM Home Projector computer-based control panel C language can control the projector

AVR控制SD卡或MMC卡的程序 调试通过-AVR control the SD card or MMC card through the program debugging