基于单片机设计的计算器毕业论文

南昌工程学院毕业设计(论文)机械与电气工程学院（院）系电气工程及其自动化专业毕业设计（论文）题目基于单片机设计的计算器（硬件）学生姓名班级学号指导教师完成日期2010年6月18日基于单片机设计的计算器（硬件）ThecalculatorbasedonthedesignofMCU(hardware)总计毕业设计（论文）34页表格6个插图18幅南昌工程学院本科毕业设计（论文）Ⅰ摘要近年来随着计算机在社会领域的渗透和大规模集成电路的发展，单片机的应用正在不断地走向深入，由于它具有功能强，体积小，功耗低，价格便宜，工作可靠，使用方便等特点，因此特别适合于与控制有关的系统，越来越广泛地应用于自动控制，智能化仪器，仪表，近年来随着计算机在社会领域的渗透和大规模集成电路的发展，单片机的应用正在不断地走向深入，由于它具有功能强，体积小，功耗低，价格便宜，工作可靠，使用方便等特点，因此特别适合于与控制有关的系统，越来越广泛地应用于自动控制，智能化仪器，仪表，数据采集，军工产品以及家用电器等各个领域。作为微型机的一个主要分支，单片机在结构上的最大特点是把CPU、RAM和ROM存储器、定时器和多种I/O接口电路集成在一块超大规模集成电路芯片上。从它的组成和功能来看，一块单片机芯片其实就是一台计算机。本次设计是采用MSC-51单片机来设计的六位数计算器,采用C语言进行程序编写实现计算器功能。外接4X5的键盘，通过键盘扫描来完成输入数的控制，输出采用1602液晶显示，并设有清零键可随时完成计算与显示的清零。计算器将完成的0至99999整数的加/减/乘/除运算。关键字：单片机AT89S521602液晶矩阵键盘C语言南昌工程学院本科毕业设计（论文）ⅡAbstractInrecentyears,ascomputerpenetrationinthesocialfieldandlarge-scaledevelopmentofintegratedcircuits,microcontrollerapplicationsarecontinuallydeepening,becauseofitspowerfulfunction,smallsize,lowpowerconsumption,cheap,reliable,easytouse,etc.thereforeparticularlysuitableforsystemswithcontrolofmoreandmorewidelyusedinautomaticcontrol,intelligentinstruments,meters,dataacquisition,militaryproductsandhomeappliancesfields.Asoneofthemainbranchofmicrocomputer,microcontrollerinthestructureofthebiggestfeatureistheCPU,RAMandROMmemory,timerandmultipleI/OinterfacecircuitintegratedonaVLSIchip.Thecompositionandfunctionfromitspointofview,asinglechipisactuallyacomputer.ThisdesignistheuseofMSC-51microcontrollertodesignthesix-digitcalculator,usingCprogramminglanguagetoachievecalculatorfunctions.4X5externalkeyboard,thekeyboardscantofinishbythenumberofcontrolvaluesandthe1602outputwithhuman-typeliquidcrystaltoachieve，andhasclearedatanytimetocompletekeycalculationanddisplayclear.Calculatortocompletefrom0to99999plus/minus/multiply/divide.Keywords:MCUAT89S52;LCD1602;MatrixKeyboard;Clanguage南昌工程学院本科毕业设计（论文）目录摘要..........................................................................................................................................................IABSTRACT.......................................................................................................................................II第一章引言...........................................................................................................................................11.1选题的依据及课题的意义.....................................................................................................11.2研究概况及发展趋势综述.....................................................................................................11.3实验设计要求............................................................................................................................21.4.总体设计思路............................................................................................................................2第二章设计方案论证与选择......................................................................................................32.1控制部分的设计方案论证与选择........................................................................................32.2显示电路的设计方案论证与选择........................................................................................42.3单片机电源部分的设计方案论证与选择..........................................................................62.4键盘设计方案论证与选择.....................................................................................................82.5单片机复位电路的设计方案论证与选择..........................................................................92.6系统组成...................................................................................................................................10第三章重要器件的知识介绍..................................................................................................113.1单片机的知识介绍..................................................................................................................113.1.1单片机功能特性...........................................................................................................113.1.2单片机各引脚功能说明.............................................................................................113.1.3单片机时钟电路..........................................................................................................133.1.4LED提示电路...............................................................................................................143.21602液晶显示资料...............................................................................................................15第四章计算器的软件编程.........................................................................................................164.1程序设计思想..........................................................................................................................164.24*5键盘扫描程序..................................................................................................................174.31602液晶显示程序................................................................................................................18第五章计算器使用说明...................................................................................................