说明：  ARM课程设计 可调控万年历时钟 1.初始化并运行RTC，然后读取时间值通过串口向上位机发送，并把秒的值输出到教学实验开发平台上的LED1~LED4进行显示。 2.分析。万年历显示时间包括年、月、日、星期、时、分和秒，利用EasyARM.exe仿真软件把结果发送到上位机上显示。通过按键进行上述的显示调节，其中月是1~12，日是1~31，星期是1~7，时是00~23，分是00~59，秒是00~59。现在时间显示2009年5月11日星期一15：23：30。
(ARM curriculum design adjustable calendar clock 1. Initialize and run the RTC, and then read the time value is sent through the serial port up the crew and the value of output to the second teaching experiment development platform LED1 ~ LED4 to display. 2. Analysis. Calendar display time including year, month, day, week, hours, minutes and seconds, using EasyARM.exe simulation software to send the results to the host computer display. Through the button to adjust the display, which is 1 month to 12, is 1 to 31 days, a week is 1 to 7, when 00 to 23, is 00 to 59 minutes, 59 seconds is 00. Now the time display May 11, 2009 Monday 15:23:30.)