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簡介:分類號F2763密級公開UDC0059編號10299S1310053碩士學(xué)位論文網(wǎng)絡(luò)嵌入性影響中小企業(yè)開放式創(chuàng)新績效的網(wǎng)絡(luò)嵌入性影響中小企業(yè)開放式創(chuàng)新績效的機(jī)理機(jī)理與實(shí)證與實(shí)證研究研究MECHANISMANDEMPIRICALSTUDYOFNETWORKEMBEDDEDNESSAFFECTINGTHEPERFORMANCEOFOPENINNOVATIONINSMES指導(dǎo)教師田紅云作者姓名劉藝玲申請學(xué)位級別碩士學(xué)科(專業(yè))技術(shù)經(jīng)濟(jì)與管理論文提交日期2016年4月論文答辯日期2016年6月學(xué)位授予單位和日期江蘇大學(xué)2016年6月答辯委員會(huì)主席評閱人2016年6月獨(dú)創(chuàng)性聲明本人鄭重聲明所呈交的學(xué)位論文,是本人在導(dǎo)師的指導(dǎo)下,獨(dú)立進(jìn)行研究工作所取得的成果。除文中已經(jīng)注明引用的內(nèi)容以外,本論文不包含任何其他個(gè)人或集體已經(jīng)發(fā)表或撰寫過的作品成果。對本文的研究做出重要貢獻(xiàn)的個(gè)人和集體,均已在文中以明確方式標(biāo)明。本人完全意識到本聲明的法律結(jié)果由本人承擔(dān)。學(xué)位論文作者簽名年月日
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上傳時(shí)間:2024-03-13
頁數(shù): 86
大?。?0.99(MB)
子文件數(shù):
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簡介:電子科技大學(xué)碩士學(xué)位論文用于S3C2410X的嵌入式LINUX的研究和移植姓名陳友平申請學(xué)位級別碩士專業(yè)電路與系統(tǒng)指導(dǎo)教師張紅雨20090501ABSTRACTABSTRACTALONGWITHTHERAPIDDEVELOPMENTOFSCIENCEANDTECHNOLOGY,MODEMSOCIETYINCREASINGLYBECOMESINTOANINFORMATIONBASEDANDINTEMETBASEDTIMES.ITBRINGSEMBEDDEDTECHNOLOGYANDRELATIVEPRODUCTSENTERINTOMANYASPECTSOFPEOPLE’SEVERYDAYLIVES.EMBEDDEDTECHNOLOGYISMADEWIDELYTOBEUSEDNOTONLYINCIVILIANPRODUCTSANDMILITARYPRODUCTS,BUTALSOFROMCUSTOMPTIONELECTRONICSTOINDUSTRIALCONTROLDEVICES.ESPECIALLYWI廿LTHEDEVELOPMENTOFDESIGNINGINDUSTRYANDMANUFATUREINDUSTRY;WITHTHEADVANCEMENTOFINTEGRATEDCIRCUITSFROMTRANSITORSTOLOGICGATESANDTOSYSTEMONACHIPSOCNOWADAYS;WHAT’SMORE,WITHTHEEFFORTOFLINUSTORVALDS’STEAMFORTHELINUXKERNELANDWITHRICHARDSTALLMAN’SADVOCATIONFOROPENSOURCESOFTWARE,EMBEDDEDTECHNOLOGYMAKESAGREATESTPROGRESSBYNOW.THELINUXWHICHISOPENSOURCECODESANDCALLBETRIMMEDANDPORTABLE,HASBEENBECOMEDRAPIDPROGRESSOFEMBEDDEDOPERATINGSYSTEM,ANDEMBEDDEDLINUXHASBEENWIDELYAPPLIEDAROUNDMANYFIELDSSUCHASMOBILEMULTIMEDIADEVICES,INDUSTRIALCONTROLDEVICES,HANDHOLDSANDAUTOMOTIVENAVIGATION.SINCETHEREARENOTONLYMANYKINDSOFCPUTYPES,BUTALSOAVARIETYOFPEFIPHERALDEVICESINEMBEDDEDSYSTEMS’HARDWARE,THEREAREMANYKINDSOFTHECIRCUITBOARDSINMARKETS.HOWEVER,THELAYOUTSOFASPECIFICCPUARENOTTOOMUCHDIFFERENCE.THESOFTWARECANBEDESIGNEDTONEEDWIDEDEMANDSFORAKINDOFPRODUCTS.THETRANSPLANTATIONONLINUXBASEDEMBEDDEDSYSTEMSOFTWAREENVIRONMENTISANALYSEDANDDESIGNEDBASEDONSAMSUNG3C2410XINTHEPAPER.THEMAINWORKSAREREALIZED嬲FOLLOWS1SUMARIZINGTHESTRUCTUREOFEMBEDDEDSYSTEMANDITSDEVELOPMENT’SCHARACTERISTICS,ESPECIALLYFOCUSINGONDEVELOPMENTOFSOFTWARE;2DISCUSSINGTHEASPECTSOFDEVELOPMENTTOOLSOFEMBEDDEDSYSTEMSOFTWAREANDDESIGNMENTSOFHARDWARE,INPARTICULARLY,ILLUSTRATINGMAKEFILEPROJECTMANAGEMENTTOOLSANDTHECOPROCESSOREPL5OFARM920T,WHICHISCALLEDMMUMEMORYMANAGEMENTUNIO;Ⅱ
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上傳時(shí)間:2024-03-13
頁數(shù): 71
大?。?3.14(MB)
子文件數(shù):
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簡介:嵌入式設(shè)備WEB管理框架研究及設(shè)計(jì)摘要信息化時(shí)代已經(jīng)到來,嵌入式設(shè)備大量涌入人們的生活與工作,為人類帶來了便捷。隨著硬件技術(shù)的大幅度進(jìn)步,嵌入式設(shè)備系統(tǒng)的硬件性能也大大提高。這時(shí),人們對嵌入式設(shè)備的軟件需求也隨之提高,簡單的按鈕控制操作已經(jīng)滿足不了客戶的需求。隨著互聯(lián)網(wǎng)與W|EB通信技術(shù)的發(fā)展,B/S模式應(yīng)用以其跨網(wǎng)絡(luò)、跨平臺(tái)、客戶端低資源占用等優(yōu)勢廣受青睞。嵌入式設(shè)備的管理系統(tǒng)也越來越傾向于B/S模式。當(dāng)前,市面已經(jīng)有大量的B/S模式嵌入式設(shè)備WREB管理應(yīng)用。但這些應(yīng)用一方面是開發(fā)商針對自己的嵌入式設(shè)備定制的應(yīng)用,無法被其他項(xiàng)目開發(fā)所借用,導(dǎo)致開發(fā)者往往需經(jīng)歷較長的開發(fā)周期。另一方面由于該類應(yīng)用需求相對簡單,應(yīng)用范圍相對較小,開發(fā)者在開發(fā)的過程中往往不會(huì)將系統(tǒng)安全性以及系統(tǒng)可擴(kuò)展性作為系統(tǒng)衡量指標(biāo)。所以從縮短開發(fā)者開發(fā)類似應(yīng)用的周期以及提高應(yīng)用性能等方面考慮,本文對嵌入式設(shè)備WREB管理框架加以研究,主要研究工作包括1.本文通過分析現(xiàn)有的各種嵌入式設(shè)備W曲管理系統(tǒng),總結(jié)其功能以及運(yùn)行平臺(tái)的共性,并加以總結(jié)歸納,完成了對本文研究框架從模型、視圖、控制三層的功能模塊設(shè)計(jì)。RESEARCHANDDESIGNFORTHRWEBAD4I卜ⅡSTRATIONFRAⅧWORKOFTHEEMBEDEDEQLⅡPN刪TABSTRACTEMBEDDEDEQUIPINENTHASBEENPOPULAR鋤ONGOURWORKANDLIVESASWEARESTEPPIILGIMOTHEERAOFINFOMATION.THEPE墑NNANCEOFTHEEMBEDDEDEQUIPMENT’SHARDWAREHASBECOMEF缸MOREENHANCEDWITHTLLEDEVELOPMENTOFTHEHARDWARETECLULOLOGY.INTHATCONTEXT,廿1ESIMPLECONTROLAND叩ERATIONBYTOUCHING廿1EB此ONISNOLONGERMEETTHEUSERS’HIGHERREQUIREMENTSFORTHEEMBEDDEDEQUIPMENT’SSO脅ARE.WITH廿LEDEVELOPMENTOFTHEINTEMETALLDWEBBASEDCOMMUNICATIONSTECLLLL010鼢B/SNLODEL印PLICATIONSHAVEBEENDE印LYF.AVOREDBYMOSTPEOPLEBECAUSEOFTHEIRDISTINGUISHINGFEATURESONCROSSNE鉚ORK,CROSSPLATFO咖AJLDCLIENTS’LOWRESOURCECONSWNPTION.BESIDES,廿LEADMINISTRATIONOFEMBEDDEDEQUIPMENTALSOHAUSBEENINCLINEDTOTHEB/SMODEL.THEMARKETISFHLLOFB/SMODELW.EBADMINISTRATIONSYSTEMSFORTHEEMBEDDEDEQUIPMENT.HOWEVER,ONTHEONEHAND,THESEW曲ADMINISTRATIONSYSTEMSARETAILOREDTOTHEPRODUCERS’OWNEQUIPMENT,、ⅣHICHCANNOTBEUTILIZEDBYOTHERDEVELOPERSANDRESULTEDINALONGERDEVELOPMENTCYCLE.0NTHEOTHERHAILD,THEDEVELOPERSWILLNOTALWAYSCOILSIDERTHESYSTEM’SSECURIT,ANDEXTENSIBILITYALSTHEMETRICSFORTHE、VH01ESYSTEM.FORTHEPU印OSEOFSHORTENINGTHEDEVELOPNLENTCYCLEANDTTT舢6刪7耵刖町川洲●L_Ⅲ8腫6舢9㈣2哪Y
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上傳時(shí)間:2024-03-12
頁數(shù): 73
大?。?15.98(MB)
子文件數(shù):
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簡介:大連理工大學(xué)碩士學(xué)位論文嵌入式瀏覽器的研究與開發(fā)姓名聶謀榮申請學(xué)位級別碩士專業(yè)軟件工程指導(dǎo)教師李明楚20081130嵌入式瀏覽器的研究與開發(fā)RESEARCHANDDEVELOPMENTOFEMBEDDEDBROWSERABSTRACTEMBEDDEDBROWSERWHICHISAKEYAPPLICATIONOFEMBEDDEDINTERACTTECHNOLOGYINEMBEDDEDSYSTEM,ISBECOMINGACORETECHNOLOGYINEMBEDDEDINFORMATIONSYSTEM.NOWADAYS,THEDIGITALSERVICEONWIRELESSNETWORK,ONEOFTHEAPPLICATIONBASEDONEMBEDDEDINFORMATIONSYSTEM,ISTHEFOCUSOFRESEARCHONEMBEDEDSYSTEMS.ONEOFTHEPROPOSALSOFTHEDIGITALSERVICEISTOCOMBINETHEBROSWERTECHNOLOGYWITHTHEWIRELESSNETWORK,WHICHAIMSTOAFFORDWIRELESSTERMINALTHEABILITYTOBROWSEMULTIMEDIAPAGESANDOTHERSERVICESONBROWSINGMETHOD,THISPAPERANALYZEDEFINITION,CHARACTERISTICANDFUTUREOFEMBEDDEDBROWSER.THEANALYSEINCLUDECOMPOSINGOFEMBEDDEDSYSTEMANDSOFTWARERDENVIRONMENT.BASETHIS,ANALYZEKEYSKILLSOFRESEARCHMOBILE,WAYANDENVIRONMENTOFRESEARCHINDEPTH.ANDUSETHESEEXOTERICAS,WAYSANDKEYSKILLSINRESEARCHOFEMBEDDEDBROWSER,DESIGNTHEWINTREEEMBEDDEDBROWSERBASEONHTML4.01PROTOC01.THISPAPERDESCRIBEHOWTOPARSEPAGEDATA,ARRAYPAGEELEMENTANDSHOWTHEPAGETOUSER;HOWDEALWITHOPERATIONSOFUSER;ANDAIMATTHECHARACTERISTICSOFEMBEDDEDSYSTEMANDMOBILES,DESIGNASCHEMETOINCREASECAPABILITY.AIMATSPEEDOFTHEPROCESSOFEMBEDDEDDEVICEISSLOWANDMEMERYSIZEISSMALL,THECOREDESIGNTHEFRAMETOMANAGEALLMODULES,ANDINCREASECAPABILITY.INCOURESOFPARSE,THECOREUSEABINTREETOSAVEALLLABELSANDUSEARESTRICTIONTABLETOCHECKVALIDITYOFALLLABELS,ANDCREATEREFERENCETABLESFORLEGALLABELSANDATTRIBUTESTOINCREASESPEEDOFPARSE.THEBROWSERCOREHASBEENTESTTEDSTRICTLYALREADY.THEEMBEDDEDBROWSERTECHNOLOGYINTHISPAPERHAVEBEENUSEDONSOMEMOBILES,ANDITHASSOMECHARACTERISTICSBASEONHTML4.01PROTOCOL,DEALWITHPAGESQUICKLYANDIMPLEMENTITONOTHERSYSTEMSEASILY.KEYWORDSEMBEDDED;WAPBROWSER;PARSE;LABEL;COREII
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上傳時(shí)間:2024-03-13
頁數(shù): 66
大小: 3.38(MB)
子文件數(shù):
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簡介:分類號TP316密級Y00/T7學(xué)校代號10699學(xué)號026220022萬歸歹季擊學(xué)碩士學(xué)位論文學(xué)位研究生題目送△式墜也叢莖丕撞王童麴廈量握直友法笪研究皇塞理1作者至皇盔指導(dǎo)教師杜承烈學(xué)科專業(yè)鹽笠墊銎堂當(dāng)墊盔二零零五年五月西北工業(yè)大學(xué)西北工業(yè)大學(xué)碩士論文ABSTRACTWITHTHEFASTPOPULARIZATIONOFTHEEMBEDDEDAUDIOSYSTEMS,PEOPLEHAVEAGROWINGDEMANDONAHIGHERQUALITYOFAUDIO.CURRENTLY,HOWTOIMPROVETHEPERFORMANCEOFAUDIOINEMBEDDEDSYSTEMSWHOSERESOURCESARELIMITEDBYAPPLYINGSOFTWARETECHNIQUESISAHOTRESEARCHTOPIC.THISTHESISFOCUSESONHOWTOIMPROVETHEPERFORMANCEOFAUDIOSYSTEMBYAPPLYINGSOFTWARETECHNIQUESUNDEREMBEDDEDLINUX.ANEWSOFTWARESOLUTIONISPRESENTEDINTHETHESISWHICHREDESIGNSANDIMPLEMENTSTHEDRIVEROFTHEEMBEDDEDAUDIOSYSTEMINKERNELCONTEXT.THISSOLUTIONPUTSEMPHASISONTHETHREEPARTSAUDIORESAMPLING,MIXINGANDDMAENGINEWITHMEMORYMANAGEMENT.FIRSTLY,INORDERTOIMPROVEAUDIOQUALITY,KAISERWINDOWLOWPASSFILTERALGORITHMISUSEDTORESAMPLINGAUDIOSIGNALSWITHDIFFERENTFREQUENCIESWHICHCANREDUCETHENOISEFURTHEST.ATTHESAMETIME,THEALGORITHMISOPTIMIZEDEFFECTIVELYTODOUBLETHESAMPLINGEFFICIENCY.SECONDLY,MIXINGALGORITHMBASEDONMIXINGTHEORYISAPPLIEDFORSUPPORTINGMULTICHANNELOUTPUTSOFAUDIOFLOWSSYNCHRONOUSLY.FINALLY,DMAENGINEANDMEMORYMANAGEMENTAREREDESIGNEDANDIMPLEMENTEDBYUSINGDUALBUFFERDESIGNTOIMPROVETHESYSTEMPERFORMANCEWHICHMEETSTHEREQUIREMENTOFREALTIMEANDCONTINUITYOFAUDIO.DURINGIMPLEMENTATION,MMXASSEMBLECOMMANDSAREUSEDTOOPTIMIZETHEKEYPARTSOFTHEALGORITHMWHICHCANALSOIMPROVETHESYSTEMPERFORMANCE.FROMTHEEXPERIMENTRESULTWECANKNOWTHATTHEEFFICIENCIESOFRESAMPLINGANDMIXINGANDTHEPERFORMANCEOFTHESYSTEMAREIMPROVEDGREATLYWHICHMEANSTHEPROPOSEDSOLUTIONSAREFEASIBLE.KEYWORDSEMBEDDEDLINUX;RESAMPLING;MIXING;AUDIODEVICEDRIVER;MMX;DMAⅡ
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上傳時(shí)間:2024-03-13
頁數(shù): 73
大?。?3.1(MB)
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簡介:重慶郵電大學(xué)碩士學(xué)位論文嵌入式LINUX26內(nèi)核實(shí)時(shí)調(diào)度研究及移植姓名王少鋒申請學(xué)位級別碩士專業(yè)計(jì)算機(jī)軟件與理論指導(dǎo)教師龍昭華;蔣貴全20100529重慶郵電大學(xué)碩士論文ABSTRACTAMONGMANYEMBEDDEDOPERATINGSYSTEMS,LINUXSYSTEMHASLOTSOFADVANTAGESSUCHASOPENSOURCE,PORTABLE,TRANSPLANTABLE,SECURE,STABLEANDPOWERFULNETWORKFUNCTIONSANDSOON.THEREFORE,LINUXSYSTEMHASMADETREMENDOUSDEVELOPMENTINTHEFIELDOFEMBEDDEDSYSTEMWITHINAFEWSHORTYEARS.HOWEVER,THESYSTEMISBASEDONTIMESHARINGTECHNOLOGYANDHASSERIOUSDEFICIENCIESINREALTIMESCHEDULING.ACCORDINGTOTHEPERFORMANCEREQUIREMENTSANDREALTIMENEEDSOFWVPHONEANDNATIONALPROJECTWHICHISWIRELESSLANVIDEOPHONETECHNICALSPECIFICATIONS,THEPAPERANALYZEDBASICPRINCIPLESOFSCHEDULINGPOLICYANDMECHANISMINEMBEDDEDLINTM2.6KERNELINDETAILANDPOINTEDOUTDISADVANTAGESOFSCHEDFIFOANDSCHEDRRLOCCURRINGTHEPROCESSHUNGER;2DONOTSUPPORTREALTIMEPROCESSOFTHEPRIORITYOFDYNAMICCHANGES;3NOSERVICEQUALITYGUARANTEE.BASEDONTHEABOVEMENTIONEDSHORTCOMINGS,THEPAPERMADEACHANGETOEDFALGORITHMINTHELIGHTOFQOSPRINCIPLE.ANEWSCHEDULINGALGORITHM,WHICHISCALLEDAQOSASSURANCEREALTIMESCHEDULINGALGORITHMQARS,ISINTRODUCEDINTHISPAPER.QARSCLASSIFIESALLTHEKINDOFTASKS,ANDTHENGIVESAMINIRNUI/LASSURANCETIMETOEVERYREALTIMETASKACCORDINGTOQOSPARAMETERMODEL.THEPURPOSEISTOMAKEREALTIMETASKGETSOMECPURESOURCESSOTHATITMAKESBETTERSOLVETHEDYNAMICCHANGESINTHEPROCESSOFPRIORITYANDQUALITYOFSERVICEGUARANTEETOMEETTHENEEDSOFREALTIME.FINALLY,THEBASICPRINCIPLEOFQARSWASSIMULATEDINLINUXPLATFORMANDTHEALGORITHMPERFORMANCEANALYSISANDSHORTCOMINGSWERESHOWED;SECONDLY,ITGAVETHEIMPLEMENTATIONOFQARSINLINUXKEMEL.THENCOMBINEDWITHWLANENVIRONMENTOFWVPHONESYSTEM,THEPERFORMANCEANALYSISOFVIDEOCHANGESOFFRAMERATEINTHEIMPROVEDALGORITHMWASGIVEN.ATLAST,THERESULTSHOWEDTHATTHEALGORITHMCANINCREASEREALTIMEOFWVPHONETOSOMEDEGREEANDMEETTHENEEDSOFPROJECT.KEYWORDSREALTIMESCHEDULING,QUALITYOFSERVICE,SCHED_FIFO,SCHED_RR,DEADLINE
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上傳時(shí)間:2024-03-12
頁數(shù): 61
大?。?3.91(MB)
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簡介:隸。軔大堅(jiān)碩士學(xué)位論文嵌入式電子琴輔助系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)東南大學(xué)學(xué)位論文獨(dú)創(chuàng)性聲明本人聲明所呈交的學(xué)位論文是我個(gè)人在導(dǎo)師指導(dǎo)下進(jìn)行的研究工作及取得的研究成果。盡我所知,除了文中特別加以標(biāo)注和致謝的地方外,論文中不包含其他人已經(jīng)發(fā)表或撰寫過的研究成果,也不包含為獲得東南大學(xué)或其它教育機(jī)構(gòu)的學(xué)位或證書而使用過的材料。與我一同工作的同志對本研究所做的任何貢獻(xiàn)均已在論文中作了明確的說明并表示了謝意。研究生簽名東南大學(xué)學(xué)位論文使用授權(quán)聲明東南大學(xué)、中國科學(xué)技術(shù)信息研究所、國家圖書館有權(quán)保留本人所送交學(xué)位論文的復(fù)印件和電子文檔,可以采用影印、縮印或其他復(fù)制手段保存論文。本人電子文檔的內(nèi)容和紙質(zhì)論文的內(nèi)容相一致。除在保密期內(nèi)的保密論文外,允許論文被查閱和借閱,可以公布包括刊登論文的全部或部分內(nèi)容。論文的公布包括刊登授權(quán)東南大學(xué)研究生院辦理。研究生簽名至2墮導(dǎo)師簽名蒙L駕勿彰.J日期
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上傳時(shí)間:2024-03-13
頁數(shù): 65
大小: 14.69(MB)
子文件數(shù):
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簡介:國內(nèi)圖書分類號TP3347工學(xué)碩士學(xué)位論文X,S}6}I嵌入式USB主機(jī)接口的設(shè)計(jì)碩士研究生導(dǎo)師申請學(xué)位級別學(xué)科、專業(yè)所在單位答辯日期授予學(xué)位單位曹國飛李全利工學(xué)碩士控制理論與控制工程自動(dòng)化學(xué)院2006年3月哈爾濱理工大學(xué)塞堡堡矍三奎蘭三蘭堡圭蘭堡堡苧DESIGNOFTHEEMBEDDEDUSBHOSTINTERFACEABSTRACTUSBINTERFACEHASTHECHARACTERISTICSOFCONVENIENTILSE,HJ【GHSPEEDANDSUPPORTINGHOTPLUGGINGINPC.THEDEVELOPMENTOFUSBDEVICESISDIFFICULTBEEANSEOFTHECOMPLEXPROTOC01.THATHOWTOAPPLYUSBTOEMBEDDEDSYSTEMANDREALIZECOMMUNICATIONOFPOINTTOPOINTBECOMEHOTINTHEFIELDOFUSBRESEARCHNOW.T11ESIMPLIFIEDUSBSYSTEMINCLUDESTWOSUBSYSTEMSUSBHOSTSYSTEMANDUSBSLAVESYSTEM.THEDEVELOPMENTOFUSBSLAVESYSTEMANDTECHNOLOGYOFUSBHOSTSYSTEMBASEDONPCHAVEBEENALREADYMATURE,HOWEVER,IMPLEMENTOFUSBHOSTSYSTEMBASEDONEMBEDDEDSYSTEMENCOUNTEREDMANYDIFFICULTIESBECAUSEOFLIMITCDRESOURCESCOMPAREDWITHTHEABUNDANTRESOURCESONTHEPC.ACCORDINGTOTHEDESIGNREQUESTMENTS,F(xiàn)IRSTLY,THEUSBL.1SPECIFICATIONISANALYZED,INWHICH,THEUSBSYSTEMARCHITECTURE,DATACOMMUNICATIONMODEL,DATAPACKETFORMATANDUSBSTANDARDDESCRIPTORHAVEBECOMETHEKEYPOINT.SECONDLY,THELOGICALCOMMUNICATIONMODELBETWEENHOSTANDDEVICEISESTABLISHEDONTHEBASISOFANALYZINGTHEUSBDEVICEMASSSTORAGECLASSSPECIFICATION.THIRDLY,THATTHEEMBEDDEDUSBHOSTSYSTEMSELECTSW79E58BANDSL11HSTOACTASTHECPUANDUSBHOSTINTERFACECHIPSEPARATELYCOBSTLNCISTHEHOSTSYSTEM.THEPROJECTOFTHESYSTEMPOSSESSESTHEVIRTUESOFLOWCOSTS,LOWPOWERANDHI咖SPEED,ETE.ANDFROMTHEPOINTOFTHESOFTWARE,THESYSTEMINTEGRATESUSBDRIVER,USBHOSTCONTROLLERDFIVEHANDBSERSORWARE.THEPAPERMAKESANALYSISESANDCONCLUSIONSONTHEDESIGNOFTHEEMBEDEDHOSTSYSTEM.ACCORDINGTOTHEMETHODINTRODUCEDINTHISPAPER,WEESTABLISHEDTHEEMBEDDEDUSBHOSTSYSTEMSUCCESSFULLY,WHICHHASTHEGENERALSIGNIFICANCETOTHEDEVELOPMENTOFEMBEDEDHOSTSYSTEMANDTHEUSAGEOFUSBDEVIDEDFROMPC.THEPROSPECTSOFTHEDEVELOPMENTINUSBPROTOCOLHASBEENMADEINTHEENDOFTHEARTICLE.Ⅱ
下載積分: 5 賞幣
上傳時(shí)間:2024-03-12
頁數(shù): 72
大?。?1.69(MB)
子文件數(shù):
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簡介:分類號UDC//LLFLLLRLLLLLLFFLLJLLLLLL1LLLLLLURTL/LLLLLFJLL/Y1438187密級編號工學(xué)碩士學(xué)位論文嵌入式LINUX2.6的實(shí)時(shí)化分析與改進(jìn)碩士研究生張磊指導(dǎo)教師馬光勝教授學(xué)位級別工學(xué)碩士學(xué)科、專業(yè)計(jì)算機(jī)系統(tǒng)結(jié)構(gòu)所在單位計(jì)算機(jī)科學(xué)與技術(shù)學(xué)院論文提交日期2008年12月論文答辯日期2009年1月學(xué)位授予單位哈爾濱工程大學(xué)ABSTRACTAMONGMAINOPENSOURCESOFLWARES,LINUXISQUICKLYENTERINGTHEREALTIMECONTROLFIELDWITHOPENKERNELSOURCECODES,STABLEPERFORMANCE,UNIXCOMPATIBILITY,MULTIPLEPROCESSESAPPLICABILITY,GREATNETWORKCAPABILITIES,HIGHSECURITYANDPRUNEDKERNEL.BUTASAGENERALOS,ITSDESIGNRULEISSATISFYINGALMOSTUSER,NOTFOREMBEDDEDREAL.TIMEAPPLICATION.ALTHOUGH2.6KERNELHASMADEMUCHIMPROVEMENTTHAN2.4KERNELINSUPPORTINGTHEREALTIMEPROCESSWITHPOSIXCOMPLIANTREALTIMEFUNCTION,MULTITHREAD,MULTITASKS,PREEMPTIVEKERNEL,O1SCHEDULINGALGOFITHM,ITSREAL.TIMECAPABILITYISVERYPOORANDCANNOTENSURETHERESPONSETIMEOFREA1.TIMETASK.THISTHESISMAINLYDISCUSSESTHERESEARCHANDIMPLEMENTOFLINUX2.6HARDPERFORMANCEINORDERTOMEETTHENEEDSINEMBEDDEDFIELD.ITANALYZESLINUX2.6KERNEL,ESPECIALLYPROCESSSCHEDULERMECHANISM,INTERRUPTMECHANISM,PREEMPTIVEKERNEL,TIMERMECHANISM.ONTHISBASIS,ITPUTONTHREEPROGRAMSACCORDINGTOTHESHORTAGEOFPOORREALTIME.FIRSTLY,THETHREADEDINTERRUPTISPICKEDOUTFORHEAVYNETWORKLOADANDI/OLOADINSYSTEM.SECONDLY,ASTHEIMPROVEMENTSOLUTION,THECLASSICALDYNAMICREAL.TIMESCHEDULINGALGORITHM一LLF1EASTLAXITYFIRSTALGORITHMISINTRODUCEDASTOTHEPROBLEMOFHNUX2.6KERNELLACKINGINREALTIMESCHEDULINGALGORITHMSANDPOLICIESINTHESCHEDULERMECHANISM,WHICHENHANCESTHESYSTEM’SREAL.TIMESCHEDULERCAPABILITYASWELLASMAINTAINSTHEORIGINALO1SCHEDULINGCHARACTERISTIC.THIRDLY,ASTOTHESHORTAGEOFLINUX2.6KERNEL’STOOLARGETIMERGRANULARITYINTIMERMECHANISM,ONESHOTMODEISINTRODUCEDINLINUX2.6TIMERFROMTHEPRINCIPLEOFTIMERMECHANISMIMPROVEMENTINKURTLINUX.THENEWTIMERMECHANISMISIMPLEMENTEDSKILLFULLYFORTHECOMBINATIONOFLLFALGORITHMANDTHEONE.SHOTMODE.THENEWTIMERMECHANISMMAKESTHESYSTEMREACHEDTHEMICROSECONDLEVELTIMERPRECISIONANDMAINTAINSITSORI百HALLOADCAPABILITY.IIITLLEFINALPARTOFTHETHESIS,ITTESTSTHELINUX2.4KERNEL,THELINUX2.6
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上傳時(shí)間:2024-03-12
頁數(shù): 69
大小: 3.39(MB)
子文件數(shù):
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簡介:青島理工大學(xué)碩士學(xué)位論文國內(nèi)圖書分類號國際圖書分類號碩士學(xué)位論文嵌入式網(wǎng)絡(luò)關(guān)系與網(wǎng)絡(luò)能力對服務(wù)創(chuàng)新績效的影響研究碩士研究生迕塑注導(dǎo)師姓名瑟毽麴撞申請學(xué)位級JLIJ.王握亟±學(xué)科、專業(yè)±本皇建煎王猩所在單位嬰究壓答辯日期2Q魚璽Z且學(xué)位授予單位壹島理王太堂青島理工大學(xué)碩士學(xué)位論文
下載積分: 5 賞幣
上傳時(shí)間:2024-03-14
頁數(shù): 85
大小: 3.15(MB)
子文件數(shù):
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簡介:成都理工大學(xué)碩士學(xué)位論文嵌入式操作系統(tǒng)WINDOWSCENET的應(yīng)用研究姓名楊向文申請學(xué)位級別碩士專業(yè)計(jì)算機(jī)軟件與理論指導(dǎo)教師王華軍20080501成都理_L人學(xué)碩七學(xué)位論文RESEARCHOFEMBEDDEDOPERATINGSYSTEMWINDOWSCE.NETINTRODUCTIONOFAUTHORYANGXIANGWEN,F(xiàn)EMALE,WASBOMINNOVEMBER’1981.ENROLLEDINCHENGDUUNJVERSITYOFTECHNOLOGYJNSEPTEMBER,2005,ANDTUTOREDBYPROFESSORWANGHUAJUN.THEMAJORISCOMPUTERSOFTWAREANDTHEORY.GRANTEDTHEMASTERDEGREEINJUNE,2008.ABSTRACT舢ONGWITHTHEINFB加ATIONTECHNOLOGY,INTELLIGENTIZEDTECHNOLOGYANDNETWORKDEVEJOPMENT,THEEMBEDDEDSYSTEMOBTAINLARGEDEVELOPSPACE.EMBEDDEDSYSTEMABIDADAPPLYINSOMEAREA,SUCHASPERSONALDAAPROCESSJNG,MULTJMEDJACOMMUMCATLONS,ON.1INETRANSACTIONPROCESSING,PROCESSOFPRODUCINGCONTROL,TRAFFICCONTROLANDSOON.IJDTSKINDSOFINTERRELATEDEMBEDDEDPRODUCTIONCOMEFONH.SPECJALLYEMBEDDEDWIRELESSINTEMETGRADUALLYMATUI.EANDWIDESPREADPRACTICAIAPPLICATION,£MBEDDEDPRODUCTFILRTHEFDEVELOPMENTANDTHEPMMOTIONDU“NGTHEDOMESTICANDFOREIGLL,THEEMBEDDEDTECHNOLOGYMOREAILDMOREWITHPEOPLE’SLIFECLOSEUNION,ITHASPULLEDC10SERTHEHUMANANDTHECOMPUTERDISTANCE,F(xiàn)B珊SAMANMACHJNEHA加ONJOUSWORKANDTHE1IVINGCONDITIONS.T1LECHARACTERISTICOFEMBEDDEDP1.0DUCTIONDECIDETHATTHEKEYOFHIGHEFFICIENCYEMBEDDEDEXPLOITATIONISCHOOSINGAAPPLLOPRIATEEMBEDDEDOPERATINGSYSTEM.THISARTICLEUNIFIESTHEACTUALDEVELOPMENTEXPERIENCE,MAINLYINTRODUCEDTHEEMBEDDEDOPERATJNGSYSTEMCHARACTE“SLICANDTHEWINDOWSCE.NETFUNCTIONSTMCTURE,THECORECHARACTERISTIC,THEKEMELHAVECUSTOM.MADEWITHTHESOFTWAREMETHOD0FEXPLOITATIONAILDS0ON.T11ISANICLEHASSTUDIEDTHEWINDOWSCE.NETADVANCEMENTCORRESPONDENCE,THEMEMORYMANAGEMENTMETHOD,THEGRASPINGADVANCEMENT,THETHREADANDTHEMEMORYMANAGEMENLASPECTKNOWLEDGE,ACHIEVEDFILLLYSEⅣICEWHICHPROVIDESUSINGTHEOPERATINGSYSTEMKEMEL,ENHANCESTHEPRO鏟AMMINGEFFICIENCY,THEECONOMICALRESOURCESGOAL.UNIFIEDPⅪ墟70TOTESTTHEPLATFB姍TODISCUSSWINDOWSCE.NETINTEGRATEDDEVELOPMENTENVIRONMENTPIATFORMBUILDERTOHAVECUSTOMMADETHEOPERATINGSYSTEMKEMELTHEMETHODANDTHEPMCESS.ANDWRITESTHEKEMELIMAGETOTHEFLASHOFPXA270THROUGLLTHESUPERIL
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上傳時(shí)間:2024-03-13
頁數(shù): 80
大?。?29.94(MB)
子文件數(shù):
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簡介:分類號UDC往密級Y839793學(xué)位論文嵌人式H.323多點(diǎn)控制器的設(shè)計(jì)和實(shí)現(xiàn)題名和副題名陳志輝作者姓名指導(dǎo)教師姓名董炷量4邋電王盤撞太堂.盛壑一趔蟹亡..班霾雖主圄塞園筮三±受童逝盛鰲職務(wù)、職稱、學(xué)位、單位名稱及地址申請專業(yè)學(xué)位級別亟±專業(yè)學(xué)位類別工程亟±工程領(lǐng)域名稱電壬皇遁信工程提交論文日期論文答辯日期學(xué)位授予單位和日期電王科擅太堂答辯委員會(huì)主席評閱人2005年月日注1注明國際十進(jìn)分類法UDC的類號電子科技大學(xué)碩士論文ABSTRACTASTHEDEVELOPMENTOFWIREANDWIRELESSWIDEBANDNETWORK,THEBANDWIDTHOFVIDEOCONFERENEEISNOMOREAPROBLEM,WHICHGREATLYENCOURAGESTHECONVENIENTANDRAPIDVIDEOCONFERENCE’SDEVELOPMENT.AMONGVIDEOCONFERENCESOFMILITARY,GOVERNMENT,COMMERCE,ANDSOON,THESECURITYOFVIDEOCONFERENCEBECOMESMOREANDMOREIMPORTANT.ITISEMERGENTTODECREASETHECOSTOFVIDEOCONFERENCEINSOMEMIDOR1ITTLESCALEAPPICATIONS.INTHISPAPER,THESCHEMEOFH.323MCUONEMBEDHARDWAREPLANEISDESCRIBED,ANDSOMEORIGINALMETHODSATEALSOINCLUDED,WHICHARETHEBASEOFDESIGNOFH.323MCUINFUTURE.THISPAPERALSOGIVESSOMEADVICESONDECREASINGHARDWARECOST.FROMTHISSCHEME,SOMEFUNETIONSOFMCUSUCHASCONFERENCEMANAGEMENT,AUDIOMANAGEMENT,QOSAREDISCUSSED,ANDSOMEPRACTICABLEMECHANISMANDMETHODSAREFOUNDOUT。INCONCLUDE,THISSCHEMEISCOSTLESSANDVA】UABE.KEYWORDSVIDEOCONFERENCE、MULTIPOINTCONTROLUNIT、MCU、MC、MP、H.323II
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上傳時(shí)間:2024-03-14
頁數(shù): 63
大小: 2.79(MB)
子文件數(shù):
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簡介:上海交通大學(xué)碩士學(xué)位論文嵌入式系統(tǒng)下USB20系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)姓名劉毅申請學(xué)位級別碩士專業(yè)機(jī)械電子工程指導(dǎo)教師曹其新20030201上海交通大學(xué)碩士學(xué)位論文摘要測試的方法、過程和結(jié)果,并對結(jié)果進(jìn)行了分析。測試的結(jié)果充分證明USB2.0系統(tǒng)驅(qū)動(dòng)程序完全達(dá)到了設(shè)計(jì)的目標(biāo),可以高速,穩(wěn)定的進(jìn)行USB2.0數(shù)據(jù)傳輸。二、USB2.0設(shè)備系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)。以研制USB2.0通訊接口的項(xiàng)目為例,闡述USB2.0設(shè)備體系結(jié)構(gòu),說明了USB2.0通訊接口設(shè)計(jì)與實(shí)現(xiàn)的全過程。USB2.0通訊接口的出現(xiàn)為嵌入式系統(tǒng)提供了PCI卡之外的又一種高速的與計(jì)算機(jī)交互的方式。與PCI卡相比較,它具有速度較快,軟硬件設(shè)計(jì)簡單,使用方便的特點(diǎn),具有非常廣泛的應(yīng)用前景。文章首先進(jìn)行了方案比較與選擇,然后詳細(xì)闡述了USB2.0通訊接口及相關(guān)的測試系統(tǒng)的軟、硬件設(shè)計(jì)的結(jié)構(gòu)、思路、特點(diǎn)以及實(shí)驗(yàn)與測試的方法。整個(gè)系統(tǒng)分為三個(gè)模塊,USB2.0通訊模塊,CPLD測試模塊,89C51串行通訊模塊。CPLD測試模塊使用FIFO方式與USB通訊模塊進(jìn)行數(shù)據(jù)通訊,測試USB2.0通訊模塊數(shù)據(jù)傳輸?shù)臏?zhǔn)確性和速度,測試的結(jié)果通過89C51串行通訊模塊返回計(jì)算機(jī)。實(shí)驗(yàn)證明,USB2.0通訊接口可以可靠,高速的傳輸數(shù)據(jù)信號,達(dá)到了設(shè)計(jì)的要求。關(guān)鍵詞USB,EHCI,驅(qū)動(dòng)程序,VXWORKSII
下載積分: 5 賞幣
上傳時(shí)間:2024-03-12
頁數(shù): 109
大?。?14.5(MB)
子文件數(shù):
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簡介:浙江工業(yè)大學(xué)碩士學(xué)位論文嵌入式多媒體終端設(shè)備的研究姓名袁瑩申請學(xué)位級別碩士專業(yè)通信與信息系統(tǒng)指導(dǎo)教師孟利民20041201THERESEARCH0FEMBEDDEDMULTIMEDIATERMINALEQUIPMENTABSTRACTWITHTHEHIGH.SPEEDDEVELOPMENTOFINTERNET,THEMANKINDSTRIDESINTOABRAND。NEWINFORMATIONAGE.ASTHETHEMEOFTHISAGE,THEMULTIMEDIACOMMUNICATIONCOMBININGWITHVIDEO,AUDIOANDDATAISCONCERNEDBYMOREANDMOREPEOPLE.THEEMBEDDEDMULTIMEDIATERMINALEQUIPMENTISANINDISPENSABLEPARTOFMULTIMEDIACOMMUNICATIONSYSTEM,ITSSTRONGFUNCTIONSANDWIDEAPPLICATIONPROSPECTSMAKEITBECOMEALOCUSTHATFIELDINRECENTYEARS.THEPURPOSEOFTHISSUBJECTISTODESIGNAWIRELESSMULTIMEDIASYSTEM,REALIZINGVIDEO,AUDIOANDOTHERSIGNALSTOTRANSMITANDDEALWITHINREALTIME.INTHISSYSTEM,IAMMAINLYRESPONSIBLEFORTHEDESIGNANDREALIZINGOFTHEEMBEDDEDMULTIMEDIATERMINALEQUIPMENT.FIRSTLY,THISTEXTHASINTRODUCEDTHECONCEPTANDDEVELOPMENTTRENDOFMULTIMEDIACOMMUNICATIONANDTHEAPPLICATIONPROSPECTSOFTHEEMBEDDEDTERMINALEQUIPMENT,PUTFORWARDATOTALBLOCKDIAGRAMOFAWIRELESSMULTIMEDIASYSTEM,CARRIEDONDETAILEDEXPOSITIONTOTHEEMBEDDEDSYSTEM.SECONDLY,ITHASPROVIDEDTHEDESIGNOFSOFTWAREANDHARDWAREOFTHEEMBEDDEDMULTIMEDIATERMINALEQUIPMENTONTHISBASIS,ANDCONCRETLYINTRODUCEDTHEDEBUGGINGCOURSEOFEVERYPARTOFTHISEMBEDDEDEQUIPMENT.THIRDLY.ITHASANALYSEDINDETAILTHEFRAMEFORMATOFTHERECEIVEDVIDEOWHICHACCORDWITHCCIR656STANDARDANDTHEPRINCIPLEOFHOWTODISPLAYIMAGEONTHETERMINALEQUIPMENT.THENHASOFFEREDTHEPROJECTOFHOWTOSHOWVIDEOONLCDTHROUGHEFFECTIVEVIDEODATADETECTION,YCRCBROBCOLORSPACECONVERSIONAND24BIT一8BITIMAGEFORMATCONVERSION.FINALLY.ITHASPROVIDEDTHEOVERALLFLOWCHARTOFTHISPROJECT.THEWIRELESSMULTIMEDIASYSTEMWEHAVESTUDIEDCANBEWIDELYAPPLIEDTOVIDEOCONTROLLING,INFORMATIONHOUSEHOLDAPPLIANCES,INTELLECTUALDISTRICTETC..THEEMBEDDEDMULTIMEDIATERMINALEQUIPMENTCADBEAPPLIEDTOMOREWIDELYFIELDAFTERFURTHERDEVELOPMENTAND
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上傳時(shí)間:2024-03-14
頁數(shù): 58
大?。?2.45(MB)
子文件數(shù):
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簡介:電子科技大學(xué)碩士學(xué)位論文嵌入式LINUX下USB20設(shè)備驅(qū)動(dòng)設(shè)計(jì)與實(shí)現(xiàn)姓名馮韜申請學(xué)位級別碩士專業(yè)信號與信息處理指導(dǎo)教師李廣軍20080501ABSTRATABSTRACTUSB2.0INTERFACEANDDRIVERSBASEDONTHEEMBEDDEDLINUXHAVEBEENUSEDWIDELY,ESPECIALLYINTHECONSUMERELECTRONICSZONE.THEUSB2.0EQUIPMENTBASEDONTHEEMBEDDEDLINUXISESPECIALLYTHENEEDOFTHEMARKET。THISPAPERINTRODUCESAUSB2.0DEVICEDRIVERDESIGNBASEDONTHEEMBEDDEDLINUX,MAINLYAUSBMASSSTORAGEDEVICEDRIVERDESIGNEXTREMELYTESTDRIVENDESIGNFORDISCUSSION.THEDRIVEISDESIGNEDFORTHESCHOOLBASEDINDEPENDENTRESEARCHANDDEVELOPMENTAHB__USB2。0IPCORE.THEIPCORECOMPLIESWITHUSBL.1SPECIFICATION。ITALSOSUPPORTSAMBA2.0SPECIFICATIONANDUTMLL.05SPECIFICATION.THIS‘AHBUSB2.0IPCORECOMMUNICATESWITHUSBBUSTHROUGHUTMIORULPIINTERFACE.ITCONNECTSWITHARMBYAHBBUS。USB2.0DEVICEDRIVERDESIGNISDIVIDEDINTOTHREEMODULESSYSTEMINITIALIZATIONANDENDPOINT0ANALYSES,BULKDATATRANSFER,UHPROTOCOLANALYSIS.SYSTEMINITIALIZATIONANDENDPOINT0ANALYSISMODULEMAINLYANALYSISUSBPROTOCOL,IMPLEMENTATIONOFTHEUSBDEVICEBUSDTED;BULKDATATRANSFERMODULEMAINLYANALYSISUSBMASSSTORAGETRANSFERPROTOCOLBULKONLYPROTOCOL,IMPLEMENTATIONOFBULKDATATRANSMISSION;UFIPROTOCOLANALYSISMODULEANALYSISOFMEDIATHROUGHUSBINTERFACEPROTOCOLUFICOMMANDSETS,ACHIEVEDVIRTUALFLASHMEMORYREADANDWRITE.THISDRIVERSDESIGNFOLLOWSTHEUSB2。0PROTOCOL,BULKONLYPROTOCOLANDTHEUFIPROTOCOL,BYTHEREALIZATIONOFUSBDEVICESPLUGARMORDERSANDUFIORDERANALYSIS,ANDIMPLEMENTATIONOFTHECORRESPONDINGOPERATION,TOACHIEVECONVENTIONALREADANDWRITEDATAACCESS,INTERNALOREXTERNALDMADMA,ANDOTHERMODESWITCHING.THEDRIVETESTINGTAILBEDIVIDEDINTOTHEREGISTERTESTING,THECHANNELTESTINGANDTHEOPERATIONALTESTING.REGISTERTESTINGMAINLYUSEDTOTESTWHETHERTHECONECTREGISTERREADANDWRITE;CHANNELENDPOINTTESTFORTESTINGTHEVARIOUSMODESOFTRANSMISSIONAREWORKINGPROPERLY;OPERATIONALTESTINGISCOMPLETEDTHROUGHACOMPLETEUDISKDRIVEANDTESTWHETHERITCALLCOMPLETEAFULLUDISK.THEIPCOREHASPASSEDTHEEDAVERIFICATIONANDSOFTWARESIMULATION.ITHASALSO玨
下載積分: 5 賞幣
上傳時(shí)間:2024-03-13
頁數(shù): 77
大小: 2.63(MB)
子文件數(shù):