按（F1）键显示（Choice）下拉菜单的功能选项，内有五个选择，本人连接了3个功能，它们分别是：appg1（实现显示一个数字的方阵，程序中的清屏功能可将上次运行的结果清除，重新显示下次运行结果）；appg2(打字练习的程序，系统按回车键出现由26个字母组成的乱序行，这时其中任一字母落下，在键盘上敲入该字母，如果输入正确，字母消失)；appg3(一个动画程序，它是一个方框向中间由大变小，并留下痕迹，然后出现一个心，按空格重复出现心，按其他键将重复,按Q键退出的程序)；appg4(还未实现任何功能)；Exit(退出系统)。

按（F10）键则显示帮助文件，帮助文件包括本人学号和菜单简介。

同时菜单能显示系统当前的日期。

-by (F1) Key Display (Choice) function of the drop-down menu options, there are five choices, I connected to the three functions, namely : appg1 (achieve figures show a phalanx, to the procedures the screen can be the result of the last operation to remove and re-run the next show results); appg2 (typing practice procedures, press the Enter Key system emerged from 26 letters of disorder OK, Then any one of the letters ended in Jianpanshangqiao into the letters, if the input is correct, the letters disappeared); appg3 (an animation process, it is a box to the middle into small, and leaving traces, Then there was a heart, according to box reappears in mind, according to other key duplication, according to the Q key to withdraw from the process); appg4 (not achieve any functional); Exit (from