Along with the rapid development of electronic technology, especially the application of single chip microcomputer technology products have been common, and the emergence of electronic calendar brings to people's lives more convenient especially, in many parts of life can meet a variety of electronic perpetual calendar. This thesis USES microcontroller AT89S51, chip DS1302 and LED digital tube, etc. Design a calendar system, and system by single chip microcomputer C language program. Calendar system have year, month, day, and when, minutes and seconds of display function, a leap year, leap month, and time adjustment function.
Key words: single chip microcomputer, perpetual calendar, DS1302, digital tube
