1正弦波﹑方波﹑三角波的发生电路设计摘要现今世界中电子技术与电子产品的应用越加广泛，人们对电子技术的要求也越来越高。因此如何根据实际要求设计出简便实用的电子技术物品便显得尤为重要。灵活、快速的选用不同特征的信号源成了现代测量技术值得深入研究的课题。能将简单的易获取的信号转换为自己所需的复杂信号是一项必不可少的技术。我们有必要做好这相关方面的研究，为被测电路提供所需要的信号及各种波形，以便完成各种相关试验。信号源在各种试验应用和实验测试处理中，仿真各种测试信号，提供给被测电路，用来满足实验的各种要求。关键词：单片机，信号发生器，波形ABSTRACT：Theapplicationofelectronictechnologyandelectronicproductsintoday'sworldincreasinglyextensive,peoplealsomoreandmorehightotherequirementofelectronictechnology.Accordingtoactualrequirementssohowtodesignsimpleandpracticalelectronictechnologyitems,itbecomesveryimportant.Flexible,fast,choosedifferentcharacteristicsofthesignalsourceisworthstudyingdeeplythemodernmeasuringtechnology.Canbesimple,easytoobtainsignalcanbeconvertedintotheircomplexsignalisanessentialtechnology.Itisnecessaryforustodotherelatedresearch,toprovidetherequiredsignalcircuitundertestandvariouswaveform,tocompletevariousrelatedexperiment.Signalsourceinvarioustestapplicationandtestprocessing,simulationoftestingsignal,providedtothecircuitundertest,tosatisfytherequirementsoftheexperiments.KEYWORDS:Microcontroller,signalgenerator,waveform2目录第一章前言.............................................................51.1课题研究背景........................................................51.2波形介绍............................................................51.2.1正弦波..........................................................51.2.2三角波..........................................................61.2.3方波............................................................61.3硬件介绍............................................................71.3.1AT89C51单片机..................................................71.3.2DAC0832转换器..................................................7第二章发生电路设计原理..................................................92.1功能和基本原理......................................................92.2红外电路............................................................932.3复位电路...........................................................102.4LCD显示部分电路....................................................102.5电源部分...........................................................112.6外部时钟电路.......................................................112.7显示接口电路.......................................................112.8独立按键部分.......................................................122.9波形转换电路.......................................................122.10串口通信模块......................................................13第三章软件设计.......................................................153.2键盘中断子程序.....................................................213.3系统初始化子程序...................................................21第四章系统仿真.......................................................224.1仿真电路图.........................................................224.2输出波形图.........................................................224.2.1、测量仪器及测试说明............................................2244.2.2测试过程..................................
