基于51单片机的闹钟实现的一个方法，该程序实现了从闹钟中读取数据的部分，写数据的部分希望由读者完善，提供了一种不冲突的设计闹钟的思路，使用51的单片机的外部中断，可以使读时钟数据与写时钟数据过程分开，该程序已经实现了上电，时钟自动行走，按下一个键盘清屏，进入中断实现写时钟数据的部分，由于使用了精准时钟芯片，即使关机时钟也不会停止行走。-51 microcontroller-based alarm clock to achieve the program to read data from the alarm part, write the part of the data by the readers perfect design alarm clock a conflict of ideas, using 51 microcontroller external interrupt can read clock data write clock data process separately, the program has achieved a power-on, the clock automatically walking, press a keyboard screen is cleared, enter the interrupt part of the write clock data, due to the use of a precision clock chip, even shutdown clock will not stop walking.