在系统管理菜单中的显示登录协议中，每次登录除了记录注销时间外，还记录了IP、日期和时间。
In the admin-menu under Show access protocol each login is recorded with IP, date and time, as well as the log out time.
利用AT 89s51单片机及实时时钟集成电路ds1643，设计了一个电子钟系统，实现了日期、时间显示及报时功能。
Use AT89S51 single chip and real-time clock integrated circuit DS1643, designed an electronic clock system, realized the date, time display and reported time.
按照给出的格式显示时间或者设置系统日期。
Display the current time in the given FORMAT, or set the system date.
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