利用汇编语言实现的一个打字练习程序，程序界面为典型的Dos窗口，当字符从窗口顶端掉下来后，如果按键与该字符相同，字符变为红色，在打字结束后，给出打字的统计结果，在打字过程中按ESC可退出程序-The use of assembly language to achieve a typing practice program, the program interface for the typical Dos window, when the characters fall from the top window, if the button with the same characters, the character turns red, in the typing after the end of typing results is given , in the typing process by pressing ESC to exit