ds1302和89s51单片机，加上LED数码管，可以显示年月日，时分秒等-ds1302 and 89s51 microcontroller, together with the LED digital tube, you can show date, minutes and seconds, such as when

ds1302加上12864显示 利用的是51.（stc系列）-led showing with 12864 l 。。thetime chip is ds1302