铃.doc

铃摘要提示作息时间的打铃器在各学校等单位经常被使用,其中智能程控打铃器应运最广泛。智能程控打铃器不但解除了作息管理的麻烦,而且改变了人工打铃、工控制电器等落后现象,它可以使电器自动的周期性工作。在这里我就是运用单片机以及一些具有特定功能的芯片来实现程序控制地自动周期性打铃器,除了打铃功能外还具备了电子时钟的功能,在断过电后,要继续准确的显示时间和打铃。在生活和生产的各个领域中,凡是有自动控制要求的地方几乎都有单片机的身影,都有使用单片机的需求。单片机的应用大有想象和拓展空间。单片机稳定可靠、体积小、价格廉价,所以很多科技产品都是采用单片机来完成所要完成的控制,而要完成这些控制只要把单片机与计算机编写的程序联系起来,就可以做到。因此单片机在使用中可以根据程序的不同而改变控制,增加了电路的灵活性。我在设计中使用了单片机 AT89S51 和芯片 DS12887 来控制打铃器的一切任务,以及在时钟电路中用芯片 74HC164 来驱动数码管,用来显示电子时钟。关键词智能程控打铃器单片机 AT89S51 芯片 DS12887 芯片 74HC164 智能程控打铃器 Intelligent Program- C ontrolled Ring A Bell 智能程控打铃器 II R ong Xueqing College of Information, Huaibei, Normal University 235000 Abstract Ringer which can prompts the time of working and resting is familiarity to everyone of us. It is used in all kings of schools and working units. Intelligence P- rogrammable Ringer which isone kind of the ringers is most popular used by engin - eers. Itnot only releases the trouble of controlling work and rest, but also changes the way people ring and the lagging phenomenon of manual control electronics and soon. It can makes the machines work proudly. Single chip puter and chip that has s- ome specifically function are the devices I use to control auto periodic the function of auto periodic ring, it also has the function of electric clock. It can re- s umes accurately displaying the time and ringing on time after switching of the power. In every domain of the generative life, the single chip on puter which is used in the place that need auto control emerges almost everywhere. It is used by factory ’s mon. The application of single chip puter has much larger imagina - bly and continuations space. Single chip puter is stable and reliable. It’s volu - me is very small, and the price of it is cheapness. All these are the merits of the single chip puter. So many science and technology products manufactures use the si- ngle chip puter to realize the controlling. In order plete these controlling what wo do just connect the single chip puter to puter p