该程序是以STC89C52为核心，只利用内部寄存器编写的万年历，外加独立键进行调表，而且可以自动识别闰年和平年（即自动识别二月份是多少天）-The program is based on STC89C52 as the core, using only the internal registers to write the calendar, plus independent key tune table, and can automatically recognize leap year Ye