能够设定年、月、日；时、分、秒、毫秒；并且可以设定准时的时间，可以精确到毫秒；当设定时间到后自动闹铃，同时设计显示时间的代码。-Be able to set year, month, day hours, minutes, seconds, milliseconds and can set the time period can be accurate to milliseconds When the time is automatically set the alarm, while d