电子设计大赛-单片机数字万年历.docVIP

电子设计大赛 —数字万年历 摘要 在当代繁忙的工作与生活中，时间与我们每一个人都有非常亲密的关系，每个人都收到时间的影响，为了更好的利用我们自己的时间，我们必须对时间有一个度量，因此产生了钟表。随着社会、科技的发展，人类得知时间，从观太阳、摆钟到现在电子钟，不断研究、创新。为了在观测时间的同时能够了解其他与人类密切相关的信息，比如温度、星期、日期等，电子万年历诞生了，它集时间、日期、星期和温度于一身，具有读取方便、显示直观、功能多样、电路简洁等诸多优点，符合电子仪器仪表的发展趋势，具有广阔的市场前景。随着人们生活水平的提高和生活节奏的加快，对时间的要求越来越高，精准数字计时的消费需求也是越来越多。 该电子万年历主要采用AT89S52单片机作为主控核心，由DS1302时钟芯片提供时钟、LED动态扫描显示屏显示，AT89S52单片机具有功耗小，片内ROM全都采用FlashROM：能以3V的超低电压工作，同时也与MCS-51系列单片机完全兼容，该芯片内部存储器为8KB ROM存储空间，同时具有89C51的功能，且具有在线编程可擦除技术，当在对电路进行调试时，由于程序的错误修改或程序的新增功能需要烧入程序时，不需要对芯片进行多次插拔，所以不会对芯片造成损坏。DS1302时钟芯片是美国DALLAS公司推出的具有涓流电流充电功能的低功耗实时时钟芯片，它可以对年、月、日等进行计时，还有闰年补偿等功能，而且使用寿命长，误差小，数字显示是采用的LCD液晶显示，可以同时显示各种需要的信息。此外，该电子万年历还具有时间校准等功能。 【关键字】 时钟电路 时钟芯片DS1302 LCD液晶显示 单片机 AT89S52 Abstract In the contemporary busy work and the life, the time has the very intimate relations with our each people, each people receive the time the influence, for better uses our time, we must have a measure to the time, therefore has produced the clock and watch. Along with social, the technical development, the humanity knows the time, from the view sun, the pendulum clock to the present electron clock, studies, the innovation unceasingly. For during hour of observations can understand that other with the human close related information, for instance the temperature, the week, the date and so on, the electronic ten thousand calendars were born, its collection time, the date, the week and the temperature in a body, have the read to be convenient, the demonstration is direct-viewing, the function is diverse, electric circuit succinct and so on many merits, conforms to the electronic instrumentation measuring appliances trend of development, has the broad market prospect. Along with the people living standards enhancement and rhythm of lifes quickening, is getting higher and higher to the time request, the accurate digital times consumer demand is also more and more This electron ten thousand calendars mainly use at89S52 monolithic integrate