【正文】 ...................... 6 顯示模塊選擇方案和論證 .................................................................................. 6 時鐘芯片的選擇方案和論證 .............................................................................. 6 電路設(shè)計最終方案決定 ..................................................................................... 7 2 硬件電路設(shè)計 ....................................................................................................................... 7 系統(tǒng)硬件概述 ............................................................................................................. 7 單片機最小系統(tǒng) .......................................................................................................... 8 單片機的復(fù)位電路 ...................................................................................................... 9 時鐘芯片電路 ............................................................................................................ 11 時鐘芯片引腳介紹 ........................................................................................... 11 時鐘芯片 DS1302 介紹 .....................................................................................12 1602LCD 液晶顯示屏 ..................................................................................................13 1602 字符型 LCD 簡介 ......................................................................................13 1602 引腳功能說明 .........................................................................................13 蜂鳴器鬧鈴電路 .........................................................................................................14 按鍵調(diào)整電路 ............................................................................................................14 淮南師范學(xué)院電氣信息工程學(xué)院 2020 屆通信工程專業(yè)畢業(yè)論文 第 3 頁 顯示模塊 ...................................................................................................................15 3 軟件部分設(shè)計 ......................................................................................................................16 程序流程框圖 ............................................................................................................16 時間設(shè)置子程序流程 ..................................................................................................16 程序設(shè)計問題 ............................................................................................................17 按鍵抖動問題 ..................................................................................................17 蜂鳴器設(shè)置 ......................................................................................................18 液晶顯示的設(shè)置 ...............................................................................................18 中斷設(shè)置 .........................................................................................................18 時鐘芯片設(shè)置 ..................................................................................................19 4 開發(fā)工具 Proteus 與 Keil ......................................................................................................21 Proteus 軟件 ................................................................................................................21 Proteus 簡介 ......................................................................................................21 4 大功能模塊 ....................................................................................................22 ISIS 智能原理圖輸入系統(tǒng) ..................................................................................23 Proteus 簡單應(yīng)用 ...............................................................................................23 Keil 軟件 ....................................................................................................................24 Keil 軟件簡介 ...................................................................................................24 Keil 軟件調(diào)試功能 ............................................................................................24 本章小結(jié) ...................................................................................................................25 5 系統(tǒng)測試 .............................................................................................................................26 硬件測試 ...................................................................................................................26 軟件測試 ...................................................................................................................26 結(jié)束語 ....................................................................................................................................26 致謝 .......................................................................................................................................27 參考文獻 ................................................................................................................................28 附錄 .......................................................................................................................................28 前言 隨著社會、科技的發(fā)展，人類得知時間，從觀太陽、擺鐘到現(xiàn)在電子鐘，不斷研究、創(chuàng)新。 關(guān)鍵詞： 單片機； DS1302； DS18B20； LCM1602 Design of the digital Perpetual Calendar based on Single chip microputer Student： delizheng tutor： yongshizhu Institute of electrical and information engineering of huainan normal university ABSTRACT： This paper mainly discuss the design and simulation of electronic calender based on AT89S51 with the help of the hardware side, the electronic calendar using AT89C51 microcontroller as the main control center, clock provided by the DS1302 clock chip , 1602LED dot matrix LCD Corporation AT89C51 microcontroller is producted by Atmel Corporation, 淮南師范學(xué)院電氣信息工程學(xué)院 2020 屆通信工程專業(yè)畢業(yè)論文 第 2 頁 low power consumption, voltage can be select