一·数据定义及存储格式：（数据段定义不同数据演示）

数据在数据区的存储，DW、DB数据定义，十进制、二进制、B格式、H格式、BCD码、ASCII码，

正数、负数（补码）存储及汉字存储。

二·段地址与物理地址：数据段DS、ES、堆栈段SS、程序段CS

三·将数据区BUF1中前N个数，分别与数M相加，数据仍保存在原处。-Definition and a data storage format: (the definition of data different data presentation above)　data stored in the data area, DW, DB data definition, decimal, binary, B format, H format, BCD code, ASCII code　positive, negative (complement) storage and storage of Chinese characters.　 Bis address and physical address: data segment DS, ES, paragraph stack SS, program segment CS　three data areas BUF1 in the number of pre-N, respectively, with a number of M add up, data is still stored in the original.