此程序旨在让读者基本掌握显示器中断寄存器的设置、二维数组及结结构体的定义、键盘上键值的获取、部分图形函数的使用，源程序有详细说明-This program is designed to help readers master the basic settings for the display interrupt register, two-dimensional array and the end structure of the definition of access keys on the keyboard, some use of graphics functions, source code is described in detail