随机显示一段字符（可含有字母和数字），根据屏幕显示进行打字练习，出错时声响报警。打字完成后统计正确率和打字时间，程序采用汇编语言在PC机上完成-中文(简体)英语日语Randomly display a character (can contain letters and numbers), according to the screen for typing practice, sound an alarm when an error occurs. After typing accuracy