tag 标签: portable

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  • 热度 24
    2013-4-17 19:01
    1749 次阅读|
    1 个评论
    Have you ever used a computer that made you want to pull your hair out? Have you ever wondered where that computer would fall on the scale of the worst computers of all time? Well, I just received an email pointing to an article with a rather interesting "info-graphic" that takes us through the some of the most loathed computers and the features that drove their owners mad.   Name a computer problem and one of these computers probably had it. From slow processor speeds to computers that would turn on in the middle of the night to computers that would melt discs, the problems go on and on. I discovered some really interesting "stuff" here, such as the fact that the Apple Mac Portable (which actually weighed in at a chunky 16 pounds was the first commercial PC to be used in space. Also, they show the original price of each machine along with that price adjusted for inflation. Knowing the computing power you can get for your dollar today, some of these prices make your eyes water... Click Here to see the original piece.  
  • 热度 13
    2012-10-4 23:04
    1648 次阅读|
    0 个评论
    Lazarus 1.0 已经发布一段时间了。目前可以使用的便携版有两个版本:X-Lazarus和LazarusPortable,它们都可以在U盘上使用:   LazarusPortable是按照portableApps的格式制作的,带有显著的PortableApps的风格。它的下载地址是: http://sourceforge.net/projects/lazarusportable/files/   目前最新版本是1.0测试版,大小是105.6M   X-Lazarus另外一个便携软件系列X-software的作品,它的下载地址是: http://www.winpenpack.com/main/download.php?view.727 可能因为它使用了压缩效率较低的zip压缩格式,文件的大小是199.6M。不过展开后的文件大小差不多,都是19000多个文件,700多兆。      
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  • 所需E币: 5
    时间: 2019-12-27 21:04
    大小: 74.36KB
    上传者: wsu_w_hotmail.com
    高集成度的LTC3577/3577-1减少了元件数目、电路板面积和价格,通过优化复杂的功率逻辑和控制难度极大地简化了应用设计。OneDeviceReplacesBatteryCharger,PushbuttonController,LEDDriverandVoltageRegulatorICsinPortableElectronicsDesignNote470MartyMerchantIntroductionStatusoutputindicateswhenthepushbuttonisdepressed,TheLTC3577/LTC3577-1integratesanumberofportableallowingthemicroprocessortoalteroperationorbegindevicepowermanagementfunctionsintooneIC,reducingthepower-downsequence.Holdingthepushbuttondowncomplexity,costandboardareainhandhelddevices.Theforvesecondsproducesahardreset.Thehardresetmajorfunctionsinclude:shutsdownthethreebucks,thetwoLDOsandtheLEDdriver,allowi……
  • 所需E币: 5
    时间: 2019-12-27 21:07
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    上传者: rdg1993
    超小型二极管和晶体管在便携式设备上的应用NXPultra-smalldiodesandtransistorsforportableapplicationsDownsizethefootprint,boosttheperformanceAtNXP,ourcomprehensiveportfolioofultra-smalldiodesandtransistorsenableshighperformanceinincreasinglysmallportableelectronics.WesafeguardsensitiveICswithadvancedESDprotectiondiodesandEMIfilter,andguaranteethelowestpowerlossesinbattery-drivensystemswithlow-voltage-dropSchottkydiodesandlowVCEsat(BISS)transistors.Wealsoofferafullrangeofstandardswitching,Schottky,andZenerdiodes,alongwithsmall-signal……
  • 所需E币: 3
    时间: 2019-12-28 19:20
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    TheLTC3562quadoutputstep-downregulatorisdesignedformulticorehandheldmicroprocessorapplicationsthatoperatefromasingleLi-Ionbattery.Itsfourmonolithic,highefficiencybuckregulatorssupportIntel’smobileCPUP-StateandC-Stateenergysavingoperatingmodes.TheoutputvoltagesareindependentlycontrollableviaI2C,andeachoutputcanbeindependentlystartedandshutdown.Designerscanchoosefrompowersavingpulse-skippingmodeorBurstModeoperation,orselectlownoiseLDOmode.Thespace-savingLTC3562isavailableina3mm×3mmQFNpackageandrequiresfewexternalcomponents.CompactI2C-ControllableQuadSynchronousStep-DownDC/DCRegulatorforPower-ConsciousPortableProcessorsDesignNote442JimDrewIntroductionThe“TypeB”regulators(R600BandR400B)donotrequireTheLTC3562quadoutputstep-downregulatorisdesignedexternalprogrammingresistorsbecausetheresistorsareformulticorehandheldmicroprocessorapplicationsthatintegratedon-chip.ThevaluesoftheinternalfeedbackoperatefromasingleLi-Ionbattery.Itsfourmonolithic,highresistorsareadjustedthroughtheI2Cport,resultinginefciencybuckregulatorssupportIntel’smobileCP……
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    时间: 2019-12-28 23:18
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    时间: 2019-12-28 23:19
    大小: 81.83KB
    上传者: 16245458_qq.com
    Step-Up/Step-DownDC-DCConverterPowersSmallPortableSystems……
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    时间: 2019-12-28 23:18
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    上传者: givh79_163.com
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  • 所需E币: 4
    时间: 2020-1-6 12:11
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    Portableaudioequipmentisevolvingfromaudiotoincludemusicvideos,TVshows,talkingbooks,personalslideshows,organizersandmore.TIoffersabroadportfolioofproductsfocuseddirectlyatportableaudioequipment.……
  • 所需E币: 5
    时间: 2019-12-24 22:33
    大小: 121.45KB
    上传者: givh79_163.com
    Abstract:Thistutorialintroducesthedifferenttypesofglucosemeters.Itexplainsthedifferenttypesofcalibrationusedfortest-strips,anddiscussesothervariablesthatdesignersmustconsiderwhenselectingproducts.Maxim>DesignSupport>TechnicalDocuments>Tutorials>1-WireDevices>APP4659Maxim>DesignSupport>TechnicalDocuments>Tutorials>A/DandD/AConversion/SamplingCircuits>APP4659Maxim>DesignSupport>TechnicalDocuments>Tutorials>InterfaceCircuits>APP4659Keywords:bloodglucosemeter,portablemedical,homemedical,test-strip,analogfrontend,bloodsugar,electrochemical,optical-reflectometry,counterconfiguration,selfbiasedconfiguration,bloodsample,alternatesitetestingMay10,2010TUTORIAL4659BloodGlucoseMetersBy:JohnDiCristinaMay10,2010Abstract:Thistutorialintroducesthedifferenttypesofglucosemeters.……
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    时间: 2019-12-24 22:22
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    上传者: 16245458_qq.com
    Abstract:Adesignexampleforaportabledataacquisitionsystemisofferedthatgreatlysimplifiesthecircuitdesigntask.Areductionfromsevencomponentsdowntothreecomponentsisaccomplishedwithadesignthathaslowersystemcost,fastertime-to-market,smallersize,betterperformance,andhigherreliability.Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSMEASUREMENTCIRCUITSKeywords:dataacquisition,portabledataacquisition,designexample,analogtodigitalconversion,dataOct22,2001converter,dataconvertor,analogtodigitalconverter,analogtodigitalconvertorAPPLICATIONNOTE830TheMAX1407CompleteDataAcquisitionSystemSimplifiesYourSystemDesignsAbstract:Adesignexampleforaportabledataacquisitionsystemisofferedthatgreatlysimplifiesthecircuitdesigntask.Areductionfromsevencomponentsdowntothreecomponentsisaccomplishedwithadesignthathaslowersystemcost,fastertime-to-market,smallersize,betterperformance,andhigherreliability.Thehardwaredesignofaportablemeasurementsystemismorecomplicatedth……
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    时间: 2019-12-24 22:11
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    上传者: givh79_163.com
    Abstract:Thistutorialdiscussesthegrowingtrendofusingmedicalinstrumentsinpoint-of-careandnear-patientsettings.Focusingonrepresentativeexamples(bloodgasanalyzersandflowcytometers)fromtheanalyticalinstrumentsegment,itdescribescriticaldesignconsiderationsformigratingthesemedicaldevicestoportableformfactors.Maxim>Designsupport>Appnotes>A/DandD/AConversion/SamplingCircuits>APP4700Maxim>Designsupport>Appnotes>AmplifierandComparatorCircuits>APP4700Maxim>Designsupport>Appnotes>High-SpeedSignalProcessing>APP4700Keywords:medicalinstruments,portablemedical,bloodgasanalyzer,flowcytometers,pointofcare,nearpatient,electricalcomponents,blockdiagramMay10,2010APPLICATIONNOTE4700IntroductiontoMedicalInstrumentsandGrowingTrendforPoint-of-CareandNear-PatientTestingBy:HughWrightAbstract:Thistutorialdiscussesthegrowingtrendofusingmedicalinstrumentsinpoint-of-careandnear-patientsettings.Fo……
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    Abstract:ThistutorialprovidesanintroductiontodialysismachinesanddiscussesFDAregulationandIEC60601-1certification,self-testandfault-indicationcapabilities,form-factorrequirements,power-budgetconstraints,andothercriticaldesignconsiderations.Itdescribesthemainsubfunctionsofdialysissystems—includingtheextracorporeal,dialysate,anddisinfectioncircuits—aswellascomponentselectioncriteriaforthedisplay,datainterface,sensingandmechanics,processing,andpower.Maxim>Designsupport>Appnotes>A/DandD/AConversion/SamplingCircuits>APP4698Maxim>Designsupport>Appnotes>AmplifierandComparatorCircuits>APP4698Maxim>Designsupport>Appnotes>BatteryManagement>APP4698Keywords:dialysis,IEC60601-1,FDAregulation,electricalleakage,extracorporeal,dialysate,disinfection,electricalcomponents,portablemedical,blockdiagramMay10,2010APPLICATIONNOTE4698IntroductiontoDialysisMachinesAbstract:ThistutorialprovidesanintroductiontodialysismachinesanddiscussesFDAregulationandIEC60601-1certification,self-testandfault-indicationcapabilities,form-factorrequirements,po……
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    时间: 2019-12-24 21:57
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    上传者: 2iot
    便携式和手持式设备应用指南简化设计ApplicationguidePortabledevicesandmobilehandsetsEnhancingtheuserexperience,simplifyingthedesignIntroductionYourpartnerforportabledevicesandmobilehandsetsNXPSemiconductorsisarecognizedleaderinportableandmobileWeconsistentlyintroducenewtechnologiesthatsetthestandardforapplications.Weofferacomprehensiveportfolioofbest-in-classsolutionsperformance,efficiency,andsize.Ournewchip-scalepackage(CSP)devices,andhavelong-standingpartnershipswitheverymajorhandsetmakerintheforexample,haveanexceptionallycompactfootprintyetachieveanewindustry.benchmarkinmechanicalrobustness.Ourcustomersrelyonusforinnovation,whether……
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    时间: 2019-12-24 21:51
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    Abstract:Single-supplycircuitrysavesspaceandcost,butaudioandvideoareusuallyreferencedtoground,whichrequirestwoopampsandanegativerail.Thiscircuit,however,usesonlyoneopamp(MAX4380)tolevel-shiftaground-referencedsignalwhileoperatingonasinglesupplyvoltage.Maxim>Designsupport>Appnotes>AmplifierandComparatorCircuits>APP4836Maxim>Designsupport>Appnotes>AudioCircuits>APP4836Maxim>Designsupport>Appnotes>VideoCircuits>APP4836Keywords:portable,batteryoperated,single-supplycircuitry,opamps,levelshiftersFeb08,2011APPLICATIONNOTE4836Single-SupplyOpAmpFormsNoninvertingLevelShifterAbstract:Single-supplycircuitrysavesspaceandcost,butaudioandvideoareusuallyreferencedtoground,whichrequirestwoopampsandanegativerail.Thiscircuit,however,usesonlyoneopamp(MAX4380)tolevel-shiftaground-referencedsignalwhileoperatingonasinglesupply……
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    时间: 2019-12-24 21:26
    大小: 38.95KB
    上传者: 238112554_qq
    Abstract:Alow-powercircuitformedwithresistors,capacitors,apushbuttonswitch,andtwocomparatorsservesasatoggleswitchthatdirectlydrivesloadsupto40mA,providingaknownstatefollowingpowerup,batteryinsertion,orsystemtimeout.Maxim/Dallas>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSKeywords:semiconductortoggleswitch,on-offswitch,singlebutton,portableequipment,portabledevices,May03,2004toggleswitch,latchingfunction,comparatorAPPLICATIONNOTE3223SemiconductorToggleSwitchAlow-powercircuitformedwithresistors,capacitors,apushbuttonswitch,andtwocomparatorsservesasatoggleswitchthatdirectlydrivesloadsupto40mA,providingaknownstatefollowingpowerup,batteryinsertion,orsystemtimeout.Weareallusedtosinglebuttonon-offswitchesonportableappliancessuchasmobile(cellular)phones.Thesinglebuttonhasseveraladvantagesoveratogglingswitchthatdeliversbatterypowerdirectlytotheelectronics:qIttakesuplessfrontpanelspace.……
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    时间: 2019-12-24 20:33
    大小: 100.3KB
    上传者: 978461154_qq
    摘要:本教程讨论了需要注意的设计时,输液泵,包括FDA的监管,自我测试电路,并符合IEC60601-1医用电气设备标准的关键考虑因素。它还提供摘要泵机制的覆盖面,上电自检(POST),低功耗和便携性,报时,报警器,静电放电变量设计。Maxim>AppNotes>A/DandD/AConversion/SamplingCircuitsAmplifierandComparatorCircuitsBatteryManagementDisplayDriversSensorsKeywords:infusionpump,portablemedical,medicalequipment,IEC60601-1May10,2010APPLICATIONNOTE4677ImportantConsiderationsforInfusionPumpandPortableMedicalDesignsAbstract:Thistutorialdiscussescriticalconsiderationsrequiringattentionwhendesigninganinfusionpump,includingFDAregulation,self-testcircuitry,andmeetingtheIEC60601-1standardforelectricalmedicalequipment.Italsoprovidessummarycoverageofpumpmechanisms,power-onself-test(POST),designingforlowpowerandportability,timekeeping,alarms,andelectrostatic-dischargevariables.OverviewComput……
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    时间: 2019-12-24 20:25
    大小: 69.22KB
    上传者: 238112554_qq
    考和超低静态电流比较低电阻模拟开关生产7uA的静态电流(IQ)的分立元件的稳压电荷泵提供10毫安。Maxim>AppNotes>AmplifierandcomparatorcircuitsPower-supplycircuitsKeywords:chargepumps,regulatedchargepumps,quiescentcurrent,portabledevices,comparatorsSep24,2004APPLICATIONNOTE3330BuildaChargePumpwithUltra-LowQuiescentCurrent(Iq)Abstract:Combininglow-on-resistanceanalogswitcheswithareferenceandultra-lowquiescentcurrentcomparatorproducesadiscrete-componentregulatedchargepumpthatdelivers10mA,withonly7uAofquiescentcurrent(Iq).Portable,battery-powereddevicesoftenspendmostoftheirlifeinstandbymode,wherethequiescentcurrentofaninternalboostconverterbleedsthebatterycontinuously.Thequiescentcurrentduringstandbycanbelargerthantheactualloadcurrent.Thoughseveralinductor-ba……
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    时间: 2019-12-24 20:18
    大小: 159.67KB
    上传者: rdg1993
    摘要:D类放大器通常是非常有效的,使他们需要较长的电池寿命和低散热的便携式应用的理想人选。然而,电磁干扰(EMI)是一个问题,通常伴随着D类开关拓扑。活跃的排放限制减少辐射,使“滤波器”的操作,使设计人员能够创建小型,高效低EMI的便携式应用。Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>AudioCircuits>APP5342Keywords:EMI,ClassD,Edgeratecontrol,portableapplication,highefficiency,activeemissionslimiting,electromagneticinterference,RFinterference,AELApr25,2012APPLICATIONNOTE5342ReduceEMIandMaintainHighEfficiencywithClassDAmplifiersinPortableApplicationsBy:TrangNguyen,BusinessManagerApr25,2012Abstract:ClassDamplifiersaretypicallyveryefficient,makingthemidealcandidatesforportableapplicationsthatrequirelongbatterylifeandlowthermaldissipation.However,electromagneticinterference(EMI)isanissuethatcommonlyacco……
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    时间: 2019-12-24 20:18
    大小: 66.26KB
    上传者: givh79_163.com
    摘要:单电源供电电路,节省空间和成本,但音频和视频通常引用到地面,这需要两个运算放大器和一个负轨。然而,该电路只使用一个运算放大器(MAX4380)级转向以地为参考的信号,而单电源电压工作。Maxim>Designsupport>Appnotes>AmplifierandComparatorCircuits>APP4836Maxim>Designsupport>Appnotes>AudioCircuits>APP4836Maxim>Designsupport>Appnotes>VideoCircuits>APP4836Keywords:portable,batteryoperated,single-supplycircuitry,opamps,levelshiftersFeb08,2011APPLICATIONNOTE4836Single-SupplyOpAmpFormsNoninvertingLevelShifterAbstract:Single-supplycircuitrysavesspaceandcost,butaudioandvideoareusuallyreferencedtoground,whichrequirestwoopampsandanegativerail.Thiscircuit,however,usesonlyoneopamp(MAX4380)tolevel-shiftaground-referencedsignalwhileoperatingonasinglesupply……
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    时间: 2019-12-24 19:16
    大小: 261.37KB
    上传者: 2iot
    摘要:本应用笔记介绍了用于便携式应用的电源管理方案四和电池系统。升降压转换器,线性稳压器,电压转换器,电荷泵和电感器稳压器的优化设计和用途。几个Maxim的电源管理设备特色。Maxim>Designsupport>Appnotes>BatteryManagement>APP671Maxim>Designsupport>Appnotes>Power-SupplyCircuits>APP671Keywords:powerforportableapplications,powerregulator,SEPIC,step-upDC-DCcontroller,step-upregulator,step-downswitchingregulator,low-voltagelogic,low-dropoutDC-DCcontroller,linearregulator,charge-pumpconverter,dropoutvoltage,voltageconverter,GaAsFET,RFpoweramplifier,GSM,TDMFApr07,2011APPLICATIONNOTE671EnergyManagementforSmallPortableSystemsAbstract:Thisapplicationnotedescribespower-managementschemesforportableapplicationswithfour-andthree-cellbatterysystems.Optimaldesignsan……