1. 以数据表格形式在ROM中建立一个含有正数和负数的表格，数据长度为16个字节，要求放置八个正数、八个负数，正、负数应离散随机放置，不允许三个以上同类型数据连续放置，数据的具体内容自行确定；

2. 编制程序，将数据表格中的数据读出并按正、负数归类，正数送入首地址为40H的内部RAM中；负数送入首地址为0B000H的外部RAM中；

3. 将首地址为0B000H的外部RAM中的数据取出并求其绝对值，然后送入内部RAM的48H～4FH单元。

-1 in the form of data tables contained in ROM to create a positive and negative forms, data length of 16 bytes, requirements placed eight positive, eight negative, positive, negative, should be discrete random placement, allowed three placed consecutively over the same type of data, the data of the specific content of their own determination　2 programming, the data read out the data in the table and press the positive and negative classification, positive first address to 40H into the internal RAM　send a negative 0B000H into the first address of the external RAM　3 0B000H the first address of the external RAM, and seek out the absolute value of the data, and then into the internal RAM 48H ~ 4FH unit.