基于at89c52的高精度时钟的设计，可以正常的显示年、月、日、时分秒。以AT89C52为核心原件，同时采用1602液晶动态显示。-Precision clock at89c52 based design, it can display year, month, day, minutes and seconds. With AT89C52 as the core of the original, while using 1602 LCD dynamic display.