The mathematic theory and the application are discussed in the data communication of CRC. Moreover,the CRC programs are proposed by 8031 and by the languages of BASIC and C.

• 论述了 CRC 校验的数学原理及其在数据通信中的应用,分别给出了用单片机8031的汇编语言实现和用 BASIC 及 C 语言的高级语言实现 CRC 校验的程序。