单片机并口实验，用于日历模拟，要考虑闰年和大月小月年月日并行运行，由于是模拟，设置每秒为一天。要安装keil_full和proteus 6.5sp5才可以运行（学单片机的应该懂，不用多说）-SCM parallel experiments, the calendar for the simulation, to consider a leap year and the date on the slow parallel operation, As the simulation is set up