报时控制系统设计.doc

目 录 1 引 言 2 2 单片机介绍 2 3 报时控制系统的硬件设计 3 3.1 系统方案的确定 3 3.2功能分析 3 3.3报时控制系统的设计原理 3 3.3.1键盘控制电路 4 3.3.2晶振电路 5 3.3.3复位电路 5 3.3.4数码显示电路 6 4.报时控制系统的软件设计 7 4.1程序设计内容 7 4.2 系统设计流程图 7 4.2.1主程序流程 7 4.2.2定时器中断流程 8 4.2.3时间显示流程图 9 5.系统调试 10 5.1 Keil C51软件环境简介 10 5.2 Proteus软件环境简介 11 5.3 报时控制系统PROTUES仿真调试结果 12 5.3.1引脚连接 12 5.3.2仿真结果（电路原理图） 13 参考文献: 15 附录（源程序） 16 致 谢 25  报时控制系统的设计 学生：指导老师：20世纪末，电子技术获得了飞速的发展，在其推动下，现代电子产品几乎渗透了社会的各个领域，有力地推动了社会生产力的发展和社会信息化程度的提高，同时也使现代电子产品性能进一步提高，产品更新换代的节奏也越来越快。 是一种用数字电路技术实现时、分、秒计时的装置，与机械式时钟相比具有更高的准确性和直观性，且无机械装置，具有更更长的使用寿命，因此得到了广泛的使用。采用AT8951单片机显示电路Timekeeping Control System Student: huxiaobao (Faculty Adviser：wangxiangqing) Abstract:Electronic technology has been developed rapidly in the 20 century,with its modern electronic products, pushed by almost permeated every area of society has vigorously promoted social productive forces development and improvement of social informatization level, also make modern electronic product performance further improved, and the rhythm of upgrade its products is becoming more and more quickly. The most common SCM module is a Timekeeping Control System, a Timekeeping Control System is a kind of digital circuit technology implementation, minutes and seconds, the timing device with mechanical clock compared with higher accuracy and intuitive and no mechanical device, has more longer service life, so it has been widely used. This topic research is the Timekeeping Control System design based on SCM, AT89C51 SCM as the main control chip system, external LED display circuit, key circuits, crystals circuit, reset circuit module constitute a simple digital clock. Through the key circuits can respectively the diffculties, minutes and seconds setting and real-time adjustment, and the result showed that in the digital tube. Key words: SCM ; digital