BasicintroductionTheoriginofopticshasbeenrecordedintheWestforalongtime.The"ReflectionOptics"byEuclidofAncientGreece(about330～260BC)"(Catoptrica)studiedthereflectionoflight;ArabscholarAlHazen(AI-Hazen...

Partofspeech[Zhuyin]:tàngyìnLettering(lettering)referstohotstampingonthefirstorfourthbackcoverofthehardcoverbookshellColorthetextandpatternsofmaterialssuchasfoil,orembossvariousconvexandconc...

IntroductionInelectronictechnology,apulsesignalisapulsesignalthatiscontinuouslyemittedaccordingtoacertainvoltageamplitudeandacertaintimeinterval.Thetimeintervalbetweenpulsesignalsiscalledperiod;andthe...

AbstractTheinformationisclearlydividedintoontology-levelattributeinformationandcognitive-levelknowledgeinformation.Basedontheunderstandingofthisessentialconceptofinformation,therelationshipbetweeninfo...

DefinitionIndustrialstructureisaconceptputforwardindevelopmenteconomics.Industrialstructureisalsocalledindustrialsystemandisthemaincomponentofsocialeconomicsystem.Industrialstructureupgradingisasystem...

WorkingprincipleThebasicprincipleofthePOSsystemistofirstcreateproductinformationinacomputerfile.Throughthecomputercashregisterconnectionstructure,thebarcodeontheproductcanbeopticallyreadonthecashregis...

OverviewPacketswitchingtechnologyisthedevelopmentofcomputertechnologytoacertainextent.Inadditiontocallingpeopledirectlytocommunicate,packetswitchingaddsapacketheaderinfrontofeachpackettoindicateTheadd...

ConceptInformationtechnologyeducationprovideslearnerswithresources(theresourceshererefertoallelementsrelatedtoinformationtechnologythatcanbeusedbylearnersinthelearningprocess)andenvironment,withThefea...

InstitutionalDefinitionTheCollegeofScienceisasecondaryinstitutioninamatrixorganizationofcollegesanduniversities.Itisengagedinmodernbasictheories,appliedscientificresearch,andtrainingofhigh-levelprofes...

Introduction"ComputerApplicationFundamentals"isanintroductorycomputercourse.Qualitycourses.Thebooksatisfiestheteachingtenetofordinarycollegesanduniversitiestotrain"appliedtalents".Itisrichincontent,ke...

IntroductionWiththecontinuousdevelopmentofinternationalcommunicationsatellites,especiallysincetheofficialprovisionofcommercialservicesbyInternationalMobileSatellitein1982,mobilesatellitecommunications...

ThesynonymHiSilicon(asemiconductorcompanyofHuawei)generallyreferstoShenzhenHiSiliconCo.,Ltd.HiSiliconMemorabiliaOnMay7,2020,HuaweiHiSilicon’ssalesreached2.67billionyuanTheUSdollaralsoenabledHuaweiHiSi...

Basicconcepts(1)Digitalcontrol.NumericalControl(NumericalControl,NC)isatechnologythatusesdigitalsignalstoautomaticallycontrolthecontrolobjects(suchasthemovementandprocessingofmachinetools),referredtoa...

QuicknavigationPanoramaHistoricalevolutionHan,WeiandJinperiodsGuozijian(10photos)ThehighestinstitutioninthecountryduringtheHanDynastywascalled"TaiXue".Theestablishmentofthe"TaiXue"byEmperorWuoftheHana...

OverviewThe"DictionaryofPsychology"believesthat:"Emotionistheattitudeandexperienceofpeopleonwhetherobjectivethingsmeettheirownneeds."AtthesametimeingeneralgeneralpsychologycoursesHealsobelievesthat“em...

DefinitionMathematicallogicisaformallysymbolizedandmathematicallogicinformallogic,anditstillbelongstothecategoryofintellectuallogicinessence.Mathematicallogicisalsocalledsymboliclogicandtheoreticallog...