输入、输出功能，检验输入的数是否为数字功能，ASCII码与二进制数的的相互转化功能，两数相乘功能，因此整个程序定义了两个宏INPUT和MULTIPLE，宏INPUT实现了输入、检验和ASCII码与二进制的相互转换功能，MULTIPLE实现了两数相乘功能，实现输出功能的是子程序OUTPUT，由于在输入的过程中多次用到了回车换行，因此定义了一个回车换行子程序CRLF。-Input and output functions, testing whether the number entered for the digital functions, ASCII and binary code number of the mutual transformation of functions, both the number of multiplication, so the whole process defines two macros INPUT and MULTIPLE, Acer achieved INPUT input, test and ASCII code and binary conversion function, MULTIPLE achieve two multiply the number of functions, the realization of the output function is the subroutine OUTPUT, as a result in the importation process has repeatedly used terms like the carriage return line feed, so the definition of a carriage return for Subroutine line CRLF.