【正文】 ...................... 30 軟件測試 .................................................................................................... 30 結(jié) 論 ......................................................................................................................... 32 致 謝 ......................................................................................................................... 33 參考文獻(xiàn) .................................................................................................................. 34 附錄 1........................................................................................................................ 35 V CONTENTS ABSTRACT(Chinese) ............................................................................................... I ABSTRACT ............................................................................................................... II CHAPTER 1 INTRODUCTION ............................................................................ 1 Purpose And Significance of This Research ............................................... 1 General Situation At Home And Abroad ..................................................... 2 The Content And Structure of This Article ................................................. 3 CHAPTER 2 THE DESIGN OF THE PROJECT ............................................. 4 System Performance And Requirements ..................................................... 4 System Block Diagram ................................................................................ 6 Program To Select ........................................................................................ 6 Power Supply Module Selection ...................................................... 6 Microcontroller To Select ................................................................. 7 Display Module Selection ................................................................ 7 Clock Module Options...................................................................... 8 Summary....................................................................................................... 8 CHAPTER 3 THE DESIGN OF THE HARDWARE CIRCUIT ...................... 9 An Overview of The System Hardware ...................................................... 9 MCU Control Circuit Design....................................................................... 9 STC89C52 Profile............................................................................. 9 MCU Control Module Design ........................................................ 11 Clock Circuit Design.................................................................................. 13 A Brief Introduction of DS1302 ..................................................... 13 Read And Write Data ...................................................................... 15 Clock Circuit Design.................................................................................. 16 A Brief Introduction of 1602 .......................................................... 16 1602Interface With MCU ............................................................... 16 1602 Instructions And Timing ........................................................ 18 Bell Circuit Design..................................................................................... 21 A Brief Introduction of ISD1820 .................................................... 21 The Working Principle of ISD1820................................................ 23 VI The Lamp Control ...................................................................................... 24 Summary..................................................................................................... 25 CHAPTER 4 THE DESIGN OF SOFTWARE CIRCUIT ............................... 26 The Design of The Main Software ............................................................ 26 The Design of The Clock Software ........................................................... 27 The Design of The Clock Display ............................................................. 28 Summary..................................................................................................... 29 CHAPTER 5 SYSTEM TEST ............................................................................. 30 Hardware Test ............................................................................................ 30 Software Test.............................................................................................. 30 CONCLUSION ....................................................................................................... 32 ACKNOWLEDGEMENT ..................................................................................... 33 REFERENCES........................................................................................................ 34 APPENDIX 1 ........................................................................................................... 35 1 第 1 章 緒論 本章闡述了 單片機(jī)校園時間控制系統(tǒng) 研究 目的和意義 、國內(nèi)外的現(xiàn)狀、發(fā)展方向 以及全文的內(nèi)容和結(jié)構(gòu) 。 研究的目的和意義 20 世紀(jì)末，隨著電子技術(shù)的飛速發(fā)展，使得電子產(chǎn)品 向著設(shè)備向小型化、智能化、微型化發(fā)展，作為高新技術(shù)之一的單片機(jī)以其體積小、功能強(qiáng)、價格低廉、工作可靠、使用靈活等優(yōu)勢，顯示出了很強(qiáng)的生命力 [1]。因此單片機(jī)特別適合與控制有關(guān)的系統(tǒng) 中， 越來越廣泛地應(yīng)用于自動控制，智能化儀器，儀表，數(shù)據(jù)采集，軍工產(chǎn)品以及家用電器等各個領(lǐng)域，單片機(jī)往往是作為一個核心部件來使用，在根據(jù)具體硬件結(jié)構(gòu)，以及針對具體應(yīng)用對象特 定的軟件結(jié)合，以作完善。這種軟件代替硬件的控制技術(shù)也稱為微控制技術(shù)，是傳統(tǒng)控制技術(shù)的一次革命。科技的進(jìn)步帶動了產(chǎn)品的智能化，單片機(jī)的應(yīng)用更是加快了發(fā)展的步伐，它的應(yīng)用范圍日益廣泛， 小到小孩玩的玩具、人們常用的銀行卡、手機(jī)，大到航天機(jī)器、機(jī)器等，人們的日常生活中都離不開單片機(jī) [2]。進(jìn)入 21 世紀(jì)以來，開發(fā)推出單片機(jī)的公司很多，各種高性能單片機(jī) 芯片市場也異?；钴S，新技術(shù)的不斷采用，更加使單片機(jī)的種類、性能以及應(yīng)用領(lǐng)域不斷擴(kuò)大和提高。因其功耗低，超高型，低成本，功能完整，在國內(nèi)越來越受到用戶的重視和廣泛使用。隨著科技的進(jìn)步和技術(shù)不斷的提升，人們再也不用為大而復(fù)雜的模擬電路花費(fèi)了巨大的精力，為繁多的元器件增加成本。而現(xiàn)在，只需要一塊幾厘米見方的單片機(jī)，寫入簡單的程序，就可以使以前的電路簡單很多。 在使用并掌握了單片機(jī)技術(shù)后，不管是在今后開發(fā)或是工作上，都會 帶來意想不到的驚喜。 本設(shè)計采用 是 STC 公司生產(chǎn)的單片機(jī)是 STC89C52 芯片為核心控制器件來控制作 息時間，實(shí)現(xiàn)智能控制