Abstract摘要PAGE\*MERGEFORMATI提供全套毕业论文，欢迎咨询多功能数字闹钟系统设计与实现摘要数字电子时钟是人们日常生活中不可或缺的必需品。电子钟主要是利用现代电子技术将时钟电子化、数字化。与传统的机械钟相比，具有时钟精确、显示直观、无机械传动装置等优点，因而得到广泛应用。另外，在生活和工农业生产中，人们对电子钟的功能又提出了诸多要求：报时、闹钟、日历、温度显示，这就需要电子时钟的多功能性。根据人们的不同要求，本设计主要为实现一款可正常显示时钟，测量环境温度、湿度，带有定时闹铃，倒计时的多功能电子时钟。本设计采用液晶显示以其亮度高、显示直观等优点被广泛应用于智能仪器及家用电器等领域。该时钟系统主要由时钟模块、闹钟模块、环境温度湿度检测模块、液晶显示模块、键盘控制模块以及信号提示模块组成。能够准确显示时间（显示格式为时时：分分：秒秒，24小时制），可随时进行时间调整，具有闹钟时间设置、闹钟开/关、止闹功能，能够对时钟所在的环境温度进行测量并显示。设计以硬件软件化为指导思想，充分发挥单片机功能，大部分功能通过软件编程来实现，电路简单明了，系统稳定性高。关键词：电子时钟；单片机；多功能；温湿度传感器PAGE\*MERGEFORMATIIAbstractDigitalelectronicclockisindispensabletodailylife.Electronicclockistheuseofmodernelectronictechnologytoclockelectronic,digital.Comparedwiththetraditionalmechanicalclock,aclock-accurate,intuitivedisplay,nomechanicaltransmissiondevice,etc.,andthusarewidelyused.Inaddition,theinthetheinthelifeandindustrialandagriculturalproduction,,thepeoplepairsofthethethefunctionofofelectronicbellalsoproposedaalotofoftherequirementsof:timekeeping,alarmclock,calendar,temperaturedisplay,whichrequiresthethetheversatilityofelectronicclock.Accordingtothedifferentrequirementsofthepeopleofthisdesigntoachieveanormaldisplayclock/calendar,measuringtheambienttemperature,humidity,multi-functionelectronicclockwithalarm.ThisdesignusestheLCDitshighbrightness,intuitiveandotheradvantagesarewidelyusedinintelligentinstrumentsandappliancesandotherareas.Theclocksystemclockmodule,alarmclockmodule,theambienttemperatureandhumiditydetectionmodule,LCDmodule,keyboard,controlmoduleandthesignalpromptmodulecomposition.Beabletoaccuratelytodisplaythetime(displayformatforthefromtimetotime:sub-sub-the:secondsseconds,systemofthe24hours),canbeatanytimecarriedoutthetimetoadjust,withathealarmclocktimesetting,alarmclockOn/Off,endeddowntownfunction,beabletopairstheambienttemperaturewherethebytheclockcarriedoutmeasurementanddisplayed.Designhardwareandsoftwareastheguidingideology,givefullplaytotheMCUfunction,mostofthefunctionalitythroughsoftwareprogrammingsimplecircuitandsy