基于89c51的断电自恢复可调时钟系统，其中涉及到花样流水灯显示、数码管显示、按键操作、液晶屏显示、EEPROM等操作。-89c51 based self-healing power adjustable clock system, which involves tricks water lights display, digital display, key operation, LCD display, EEPROM and other operations.