1．程序一：在显示器上显示四位十六进制数；

2．程序二：将8个键按实验室要求定义键值，按任意键在显示器上显示对应键值，要求显示能左移

3．程序三实现以下要求：

a).定义键盘按键，5个为数字键，3个功能键：加号＋，乘号*，等号＝；

b).可进行三位16进制加法运算；

c).可进行两位16进制乘法运算。

-1. Procedure: in the display to show four hexadecimal number　2. Procedure II: 8 keys to the laboratory in accordance with requirements of the definition of keys, press any key in the display to show the corresponding key, the requirements shown to the left 3. Procedures to achieve the following three requirements: a). The definition of the keyboard keys, 5 for the digital keys, three function keys: plus sign+, multiplication*, equate =　b). Can be of three addition operations 16 M　c ). could be two 16-band multiplication.