基于单片机的多功能数字电子数字电子时钟系统设计 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:单片机;数字时钟AbstractAt the end of the 20th century, the electronic technology has obtained the rapid development, under its impetus, the modern electronic products almost permeated the society.Each domain, promoted the social productivity development and the social informationization degree vigorously the enhancement, simultaneously also causes the modern electron production.Character can be further improved, the pace of product upgrading is also faster and faster.People in modern life pay more and more attention to the concept of time, it can be said that time and money draw the equal sign. For those whoVery strict and accurate grasp of time for people or things, the inaccurate time will bring very big trouble, so with digital.A clock with a tube for display shows a great advantage over a pointer clock. The time displayed on the nixie tube is sim...