单片机主要应用于控制领域，用以实现各种测试和控制功能，因此单片机又常称为微型控制器。现在单片机的应用已经相当广泛，渗透到了社会生活的各个方面。LED显示屏作为新一代的信息传播媒体，已经成为城市信息现代化建设的标志。本次设计的主题是基于单片机控制的LED大屏幕显示，是对单片机应用的又一实践。本文的设计理念是：硬件设计与软件设计独立进行，相互促进。-Mainly used in the field of single-chip microcomputer control to achieve a variety of test and control functions, it also often referred to as single-chip micro-controller. SCM applications now have quite extensive, infiltrated all aspects of social life. LED display information as a new generation of media, information has become a city symbol of modernization. The theme of this design are based on single chip controlled LED large screen display is another practice of single-chip applications. In this paper, the design philosophy are: hardware design and software design independently and promote each other.