本文研究了基于数码管显示的数字时钟系统设计与实现。该系统具有时间设置及显示、闹钟、计时等功能，系统以MSP430单片机为核心，主要进行基于MSP430单片机的低功耗型数字时钟及其系统的研究。系统带有数码管显示器，配合按键提供友好的用户界面，操作简单，该数字时钟能长期、连续、可靠、稳定的工作；同时还具有体积小、功耗低等特点，便于携带，使用方便。系统软件设计包括单片机编程。单片机软件编程主要实现按键、数码管显示、时钟、计时、闹钟等模块功能。 

在本设计中充分利用了单片机内部资源，涉及到了键盘控制、数码管显示、中断系统、定时/计数器、串口通信等。-This paper studies the design and implementation of digital clock system based on digital display. The system has time to set up and display, alarm clock, timer function, MSP430 microcontroller as the core system of low power digital clock system based on MCU and MSP430. System with digital tube display, with keys to provide a friendly user interface, simple operation, the digital clock can long-term, continuous, reliable and stable work　at the same time, also has the characteristics of small volume and low power consumption, easy to carry, easy to use. The system software includes the design of microcontroller programming. SCM software programming to achieve the main button, digital display, clock, alarm clock, timer module.  

In the design of the full use of internal resources of the microcontroller, involves the keyboard control, digital display, interrupt system, timer/counter and serial communication etc..