利用STC89C52制作一个万年历,文件包含原理图(Cadence-Allegro),PCB示意图及整个源程序,经调试可用,希望对于编程初学者有帮助.-use STC89C52 produced a calendar, document contains drawings (Cadence - Allegro), and the entire PCB schematic source files, The tests can be used, hope for the program is to