CRC-16是检测数据在发送过程中发生错误的常用校验方法，本文通过从工程应用的角度，讲述如何实现CRC-16的程序开发，并给出了Visual Basic和Visual C++程序代码，给从事工业控制的人员在写通信程序的时候提供一些有价值的参考。-CRC-16 is to detect data errors in the process of sending commonly used calibration methods, the paper from the engineering point of view, about how to implement CRC-16 program development, and gives the Visual Basic and Visual C++ code, to engage in industrial control personnel when the communication program in writing to provide some valuable information.