需要一个八位LED数码管显示器用于显示时间（分，秒）；显示的初值在启动实验箱运行程序后输入；按任意键后时间开始走动，每隔一秒改变一次显示值（每60秒为一分钟，60分一小时，24小时后复位）；能同时显示时分秒共六位；秒钟为60时，能自动复位到零，并使分钟加一；分钟为60时，能自动复位到零，并使小时加一；小时为24时时，自动复位到零。LED数码管显示器循环显示时分秒的动态值。现显示过程中，按A键可重新置初值；按B键暂停时间，再按一次从当前时间开始计时；D、E、F键分别清除小时、分钟、秒钟对应两位。-Need an 8 LED digital display to display time (tube)　second, The show started in the initial input to run the program after experimental box, Press any key after every time, a change that value (once every 60 seconds for a minute, 60 points, 24 hours after an hour　reset) When can display of six seconds, For 60 seconds, can be reset to zero, and make a minute, For 60 minutes, can be reset to zero, and make a hour, 24 hours, automatic reset to zero. LED digital display monitor cycle when tube of dynamic value determined. Now display process, according to A key to offset the initial, According to B key stoppage time, click again from the start time, D, E, F key respectively, minutes and seconds clear hour corresponding two.