这是一个打字计时练习的程序,在缓冲区中预放了一些字母,运行时,可按照屏幕上 显示的字母输入练习,每输入完一行按回车键后,可显示出练习输入的时间.-This a time to practice typing procedures, the pre-release buffer some letters, operation, in accordance with the screen displayed on the alphanumeric input practice every imported End his press the Enter key, will show that the importation of practice time.