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1927 基于 单片机 万年历 设计

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1927_基于单片机的万年历设计,1927,基于,单片机,万年历,设计

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黄河科技学院毕业设计说明书 第 IV 页 基于单片机的万年历设计摘 要电子万年历是一种用万年历时钟芯片实现年、月、日、时、分、秒计时，并通过单片机处理后送给显示芯片显示的装置，与机械式时钟相比具有更高的准确性和直观性，且具有更长的使用寿命。本课题是设计一个基于单片机和时钟芯片的电子万年历，由硬件电路和软件组成。硬件由主控电路、时钟电路、温度采集电路、显示电路、键盘接口5个模块组成。主控电路采用单片机芯片STC12C5A60S2、时钟电路采用时钟芯片DS1302、显示电路采用KNY12864液晶显示、温度采集电路采用DS18B20温度传感器、键盘接口电路使用普通按键加上拉电阻完成；软件利用KEIL C51语言编程实现单片机程序控制。单片机通过读取时钟芯片DS1302获取时间数据和读取DS18B20采集的温度信号获取温度信息，然后再把时间数据和温度数据进行处理后送给12864液晶模块，显示阳历年、月、日、时、分、秒、闹钟、星期、温度等。关键词：单片机，DS1302，液晶显示 Author：Zhao Ziyu Tutor：Cai ChaofengBased on SCM calendar designAbstractE-calendar clock is a device which can be calendar year, month, day, hour, minute, seconds for time, and sent to the graphics chip shown through microcontroller. Compared with the mechanical clock, e-calendar clock has a higher accuracy and Intuitive, and has a longer life. Digital Calendar is an application of SCM system, made of compatible hardware and software. Hardware has five modules including the control circuit, clock circuit, the temperature acquisition circuit, display circuit, keyboard interface. Main control module has STC12C5A60S2 microcontroller, the clock circuit with clock chip DS1302, LCD display module with 12864, the temperature detected by DS18B20 temperature sensor, the keyboard interface circuit using the common keys with pull-up resistor; software uses programming language KEIL C51 to achieve MCU process control. MCU get time by reading the data from DS1302 clock chip and read the temperature signal for DS18B20 collected temperature information, and then provide time data and temperature data to the 12,864 LCD module, displaying the Gregorian year, month, day, hour, seconds , Alarm clock, week, temperature and so on. Key words：MCU，DS1302，LCD Display目 录1 绪论12 系统设计方案22.1 方案选择和论证22.1.1 单片机芯片的选择方案和论证22.1.2 时钟芯片的选择方案和论证22.1.3 显示模块的选择方案和论证22.1.4 温度传感器的选择方案和论证32.2 系统最终方案33 系统的硬件和软件设计43.1 系统的硬件设计43.1.1 系统设计框图43.1.2 硬件概述43.1.3 单元电路的设计53.1.3.1 单片机主控模块设计53.1.3.2时钟电路模块设计63.1.3.3 显示电路模块设计73.1.3.4 温度采集模块设计83.1.3.5 双电源供电电路设计93.1.3.6 RS-232电路设计93.1.4