Basys2开发板上烧写后，可在LCD1602显示屏上动态显示年月日时分秒和温度值，并且可以手动设置闹钟和温度上下限，越限报警。(Basys2 development board programmer, can dynamically display the date when the minutes and seconds and temperature on the LCD1602 screen, and you can manually set the alarm clock and th