In this paper, it studies one of the error-check controls of the communications of computers network-Cyclic Redundancy check (CRC).
在计算机网络通信中，为了降低数据通信线路传输的误码率，可以采用一种差错检测控制———循环冗余码校验(CRC)。
The users only choose one module of the same kind of modules, when he controls the single equipment. The unnecessary hardware redundancy is avoided and the cost of integration is reduced enormously.
尽可能使用户选用某一种类的一块板即可满足对单台设备相应量的控制，从而降低了系统构成的成本。
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