1、 单片机技术课程设计说明书单片机技术课程设计说明书 数字电子钟 院 、 部： 学生姓名： 指导教师： 职称 专 业： 班 级： 完成时间： 摘 要 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。 现代生活的人们越来越重视起了时间观念，可以说是时间和金钱划上了等号。对 于那些对时间把握非常严格和准确的人或事来说， 时间的不准确会带来非常大的 麻烦，所以以数码管为显示器的时钟比指针式的时钟表现出了很大的优势。数码 管显示的时间简单明
2、了而且读数快、时间准确显示到秒。而机械式的依赖于晶体 震荡器，可能会导致误差。 数字钟是采用数字电路实现对“时” 、 “分” 、 “秒” 数字显示的计时装置。数字钟的精度、稳定度远远超过老式机械钟。在这次设计 中，我们采用 LED 数码管显示时、分、秒，以 24 小时计时方式，根据数码管动 态显示原理来进行显示，用 12MHz 的晶振产生振荡脉冲，定时器计数。在此次设 计中，电路具有显示时间的其本功能，还可以实现对时间的调整。数字钟是其小 巧，价格低廉，走时精度高，使用方便，功能多，便于集成化而受广大消费的喜 爱，因此得到了广泛的使用。 关键字：数字电子钟；单片机 ABSTRACT At th
3、e end of the 20th century, electronic technology has experienced rapid growth, the modern electronic products, almost permeated the various sectors of society, and promoted the development of social productive forces and the social informatization level, but also improve the modern electronic produc
4、ts to further improve the performance, product update rhythm also more and more quickly. Modern life of people pay more and more attention to the concept of time, money and time on the hospital. For those in time and accurately grasp the very strict about or inaccurate, time will bring great trouble
5、, so as to displays clock digital tube than the pointer clock showed a lot of advantages. Digital pipe display time is simple and accurate readings, time to seconds. And mechanical dependent on crystal oscillators, may cause errors. A digital clock is used in digital circuit “, “ points“ and “second
6、“ digital display timer. A digital clock accuracy and stability than old mechanical clock. In this design, we adopt LED digital display tube, minutes and seconds, when in 24 hours time, according to the principle of dynamic display of digital tube to show, with the crystals 12MHz produce oscillation pulses, timer count. In this design, the circuit has its time, still can realize the function of the time. A digital clock is its
