4位数码管显示时间，可以显示年（2009-2099）、月、日、时、分、秒、跑秒。自动计算闰年平年、每月天数。调时间时，被调对象可增可减，能自动变化增减速率。按键带双击功能。还有其他的较多功能详见源码。-4 digital display of time, you can display year (2009-2099), month, day, hour, minute, second, run second. Automatic calculation of leap year average year, the number of days per month. Transfer time, the object can be adjusted upwards or downwards, can automatically increase or decrease in rate of change. Button with a double feature. There are other more feature see source.