为什么需要使用这两个信号？ 因为CAN报文信号在汽车CAN总线网络中传输会出现衰减，也会受外界环境因素影响，比如电磁干扰，CAN总线网络遭到黑客入侵或攻击等现象，这些都可能导致接收端接收到的信号与发送端发出的信号不一致，因此就需要应用一些校验 ...

Often, files that are distributed over the Internet are provided with a checksum number for security and file validity. While they are not needed, some people may wish to verify their downloads with ...