基于51单片机数字时钟的设计.docVIP

基于单片机电子数字钟的设计 摘要 近几年，单片机在各个领域得到广泛的应用。从工业到人们的日常生活，大部分的科技产品都是通过单片机来控制。在它问世之前，自动控制设备不能被广泛的应用，这是因为控制设备的体积庞大，耗电量大，价格昂贵。在第一台微处理器成功研制不久，第一个单片机就问世了。因为其小巧的体积，低功耗，以及高效的性能，单片机受到了大家的欢迎。 今天，单片机成为了解决低复杂度，中等复杂度控制问题的传统选择。文章介绍了单片机在定时方面的基本功能。生活中，我们发现，有时病人要在注射药物之前作皮试试验，防止过敏。护士们有必要在一定时间后记录结果。这时，时间的准确显得很重要的。但是，有些时候，由于病人的人数众多，忘了记录时间。根据这种情况，我们设计了一个设备解决此问题。 我们选择的方法是单片机开发设计使用的传统方法，通过本次设计，可以了解整个单片机开发的流程。文章首先介绍了单片机的基本知识。下来比较了一些可行的方法。同时给出了框图，流程图等。论文涵盖了从需求分析，系统设计，编程，原理图，PCB图等设计的基本过程。关键词：单片机，软件仿真，原理图，PCB图 Based on the design of single-chip digital clock Abstract Single Chip Microcomputer has achieved a immemse popularity in all fileds in recent years.From industry to people’s common lives,most of technical applications are controlled by SCM. Before it appeared,the automatic devices could’t be widely used because of their huge size ,large quantity of power cost and high price.The first SCM appeared as soon as the first MCU(MicroController Unit) was successfully developed.Due to its small size,low power cost and high performance,it has been welcomed by people. Nowadays, SCM has been selected as a traditional solution for low or medium complexity problems about devices controlling.This essay shows a basic application of SCM in timing for people’s life. We often find that patients sometimes has to receive medical tests before using medcines for fear that patients may get allery,so it is necessary for nurses to record the result after a fixed time interval. Under this condition,time accuracy is a vital factor that effects the results.Unfornately,some nurses ignore some patients when a large number of patients waiteing for tests.Form this point,we design a device which can solve this problem. The approach we choose is the common way for SCM developing from which we can get an acknowledge about the SCM develop flowing process.The paper first introduces knowledge on 51 serial SCM,then compares some possible methodologies.At the same time,it also shows block diagrams,flowing process di