说明：一个短信防伪系统的开发案例，包括案例开发源程序及数据库文件。
An SMS security system development scenarios, including case development source code and database files.
本文给出了MTC开发环境的主要功能、源程序结构、操作环境及算法的扩充方法。
This paper gives the main functions, source program structure, operation environment and the expanding methods of algorithm for MTC environment.
介绍了PIC16F877单片机与PC机实现串行通信的一种方法，并给出了硬件接口电路及通信源程序。
The paper introduces an approach of serial communication of PIC16F877 single chip computers with PC and provides a hardware interface circuit and a communication source program.
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