摘要：单片计算机即单片微型计算机。是 集CPU ,RAM ,ROM ,定时，计数和多种接口于一体的微控制器。他体积小，成本低，功能强，广泛应用于智能产品和工业自动化上。而51 单片机是各单片机中最为典型和最有代表性的一种。这次毕业设计通过对它的学习，应用，从而达到学习、设计、开发软、硬的能。本设计以单片机AT89C51为核心，运用C语言编程，用发光二级管实行多功能的电子时钟，在实现正常的电子钟基础上，更增加了一些额外的功能，也同时增加了一些趣味性。

关键词：单片机；发光二极管、C语言

-The Design of The Interest Electric Clock System　　　

Name：Lin Ji Hai

　　　　　　　　　 Major：Electronics Information Science and Technology

Tutor：Gong He

Abstract: Monolithic computer namely monolithic microcomputer. Is collection CPU, RAM, ROM, fixed time, counting and many kinds of connections in a body s micro controller. His volume is small, the cost is low, function, widely applies in the intelligent product and in the industrial automation. But 51 monolithic integrated circuits are in various monolithic integrated circuits are most typical and the most representative one kind. This graduation project through to its study, application, thus achieves the study, the design, to open becomes tender hardly, energy. This design take monolithic integrated circuit AT89C51 as a core, utilizes the C language programming, implements the multi-purpose electronic clocks with the illumination second-level tube, in realizes in the normal electron clock foundation, increased some extra fun