51单

RS232通信程序，是PC机与单片机之间的通信-RS232 communication program is the PC machine with single-chip communication between

c8051f020 i2c 的简单应用-c8051f020 i2c simple application

AT89c2051控制9200b发双音频码用8870解码并将BCD码返回AT89C2051,然后比较的源代码和Hex文件。-AT89c2051 Two-control 9200b audio decoder yards with 8,870 and will return to BCD AT89C2051, then compare the source code and Hex documents.

单片机最小系统，两位LED数码管由串口输出接两个164驱动，Lout,Rout为左右声道输出，SET， ALT0， ALT1为三个按键，也可自己在开始的I/O定义改成你想用的I/O口；12M晶振若用89C51则只可装下约14首歌曲，用89C52则可装下近40曲-smallest SCM system, two LED digital serial output from the pipe then two 164-driven, Lout, Rout for about channel output, SET, ALT0, ALT1 to three keys, but also his own in the beginning I/O definition you want to change the I/O port; If using crystal 12M 89C51 can carry only about 14 songs, can be loaded with 89C52 Near 40

读取RF射频卡源代码（C51）-RF card reader source code (C51)

单片机用作通用红外遥控接收器的设计 PWM调制开关电源的研究 以电子电力学为核心 以整流技术为主-generic microcontroller for infrared remote control receiver design PWM switching power supply of electronic learning for power to the core technology-based rectifier

各位朋友，本人买的12864液晶屏已经调试通过，下面是源程序，无偿奉献，有需要的赶快下啊，这可花了我一个星期啊(jjcool)-friends, I bought the 12864 debug screen has passed, Below are the source, with the dedication that are needed quickly under ah, it could take me a week ah (jjcool)

AD采样实验，结果通过串口送PC显示 结果送内部数据区30H，共16个-AD conversion

gsm短消息报警程序，与硬件配合，完成开关量输入，短消息通知主人，用于防盗报警系统。-Short Message gsm alarm procedures, and hardware with complete switch input, short message to inform the owner for the anti-theft alarm system.

一个电子产品开发时的部分c代码C!绝对能用!-When an electronic product development part of c code C! Absolutely can!