本文采用单片机技术实现防贪睡懒人闹钟的设计。该闹钟的设计方案如下：将AT89C52单片机作为核心，采用8位LED数码管显示时间、年月日、星期和响铃问题。并通过2个按键调节时间、年月日，2个按键判断响铃问题的对错，1个按键控制回到显示时间模式。这一闹钟很好的解决了用户因为早晨睡懒觉的习惯而造成上课或上班迟到的问题。对这一闹钟系统进行仿真，所得结果对于通过扩展闹钟功能来为人们的工作和生活带来方便具有重要指导意义。-Comparing and analyzing the development technology of the alarm clock, the design determines to use the MCU technology to realize the anti- snooze alarm clock. The design uses AT89C52 as a core chip and uses 8-bit LED displaying time, date and questions. And the design has five buttons to achieve human-computer interaction: one button is used to jump out of the adjustment model, two buttons are used to adjust time, date and the other buttons are used to determine whether the formula are right or not. The alarm clock can solve the user s late for school or work problem as the user has the habit of getting up late . The alarm clock simulation results have an important guiding significance on bringing convenience to people’s work and life by extending the alarm clock function.