交通灯模拟控制器

stm32 采用 usart2  dma方式与sim900模块进行通信,实现了 底层驱动的封装, 实现 短信收发,GPRS , tcp/udp ftp,http client 功能短信接收采用 usart2 串口中断

i2c的调适成学。ARM7 交流使用，请勿外传。-i2c adjustment into school. ARM7 exchange use, not rumors.

UDP实现嵌入式原程序-UDP realization inserts the type original procedure

Nokia3310的proteus仿真模型Design.zip

这个代码不能在linux编译，要加以修改，但写得是很好的，选自某个嵌入式linux 的源码 -the code in Linux compiler not to modify, but is written in good, chosen from a certain source embedded Linux

51单片机编程基础与开发实例详解（附书光盘），随书的光盘，里面程序配备电路图，可以让自学者使用

PIC单片机产生警报声的程序。频率从1.8K-3.5K匀速增加，共有46个频点，每个频点扫频16个半周期，持续200mS。-PIC Singlechip alarms generated procedures. Frequencies from the uniform increase of 1.8K-3.5K, a total of 46 frequencies, each frequency sweep 16 semi-cycle, continuous 200mS.

> CONTACT, NORMALLY OPEN        Xname           Rname          Yname                              ----] [----     ----] [----    ----] [----     If the signal going into the instruction is false, then the output     signal is false. If the signal going into the instruction is true,     then the output signal is true if and only if the given input pin,     output pin, or internal relay is true, else it is false. This     instruction can examine the state of an input pin, an output pin,     or an internal relay. >

中国钢丝绳标准:几乎国内所有的钢丝绳标准都有。-China wire rope standard: almost all domestic wire rope standards are.

金鹏电子出产的液晶ocm4x8b源代码，基于51单片机的，如果其他控制器请修改。-Jinpeng Electronics LCD ocm4x8b produced the source code, based on the MCU 51, if the other controller requested the modification.