设计电路可以通过键盘输入初始日期，具备时钟的基本功能，具备年、月、日及星期的显示功能，此外有闹钟（定时）的功能以及时间、日期及星期的校对功能。-The design of circuits through keyboard input initial date, the basic functions of a clock with year, month, day and week display functions, in addition there is an alarm clock (timing), as well as the function of the time, date and week proofing features.