说明：  建立对多个16位整数串接在一起构成的大容量整数进行加减乘除运算的子程序库。 输入：键盘输入三个参数 :位数（以16位整数为一‘位’）,两个参与运算的多位数（16×位数）分别存放在数据区 输出：运算结果（16×位数）存放到数据区，DS:BX指向结果所在地址，并将结果显示在屏幕上
(The establishment of more than 16-bit integer series together constitute a large capacity to carry out an integer calculation subroutine library operations. Input: keyboard input three parameters: the median (in 16-bit integer is a bit), two organizations participating in the operations of multi-digit (16 × median) were stored in the data area output: Operational results (16 × median) to the data storage area, DS: BX point to the results of the host address, and the results displayed on the screen)