cc2430的最基本例子，利用51内核对板上资源进行操作-cc2430 most basic example of the use of 51 cores to operate on-board resources

51单片机操作sim900a模块的例子。希望对开发GPRS的用户有用-Examples 51 microcontroller operating sim900a module.We hope for users to develop useful GPRS

基于51单片机的移动广告系统设计，通过单片机控制GSM模块接收短信，并在12864上显示短信内容（英文）-Mobile advertising system design based on 51 microcontroller, microprocessor controlled by GSM module to receive messages, and display the message content (in English) on 12864