crc16校验子程序，采用查表法计算。 对于汇编开发人员比较有益。-crc16 check subroutine, using look-up table method. For compilation of useful development personnel.

MCU-51子程序，包含加，减，乘，除，取补，平方，开方，数制转换，查表，校验。-MCU-51 routines, including add, subtract, multiply, divide, take up, square, prescribing, a number of system conversion, look-up table, check.

用汇编写的CRC校验程序，用的是查表法，-write by asm ,it is used for CRC proofreading