基于KEIL C51和MC55模块的短消息发送和接收程序源代码,C51控制，AT命令实现-based KEIL C51 and MC55 module of SMS sending and receiving the source code, C51 control, AT commands

mc55上关于GPRS连接和测试的文本，使用AT命令实现测试

西门子MC55模块的模块化编程，可实现短信和GPRS（TCP/IP）方式的通讯。采用状态机编程思想，实时性和可移值性较强！！,Siemens MC55 module, modular programming, use of SMS and GPRS (TCP/IP) mode communications. Use of state machine programming ideas, real-time and shift the value of strong! !

MC55的原理图及单片机控制(C语言)