信息科学与电子工程专业英语 unit 2ppt课件

1、技术工程师，信息技术工程师，1，PPT学习通信，单元2，集成电路，2， 2 PPT学习交流，4，新世界，4，5，新世界，5，6，1， digitallogicandelectroniccircuitsderivetheirfunctionalityfromelectronicswitchescalledtransistor.roughly speaking表示： thetransistorcanbelikenedtoanelectronicallycontrolledvalvewherebyenergyappliedtooneconnectionofthevalveenablesenergyt

2、oflowbetw ions.1通过被称为晶体管的电子开关来获得它们的(各种)功能，一般来说，晶体管像是一种电子控制阀，由此施加到阀的一端的能量在其他两个连接端之间流通。6、7、1、按组合多重晶体管、数字化逻辑块、ssuchasandgatesandflip-flops are格式。 aremadefromsemiconductors.consultaperiodictableofelementsinacollegechemistrytextbook。 andyouwilllocatesemiconductorsasagroupofelementsseparatingthemetalsandn

3、onmetals.2调查了高等院校化学书籍的元素体周期表，发现半导体是介于金属和非金属之间的一种元素体。 七、八、一、 theyarecalledsemiconductorsbecauseoftheirabilitytobehaveasbothmetalsandnonmetals.asemiconductorcanbemadetoconductelectricity metal does.thesedifferingelectricalpropertiescanbeaccuratelycontrolledbymixingthesemiconductorwithsemiconductorwith

4、 mounts of othh 、8、9、1、thismixingiscalleddoping.asemiconductorcanbedopedtocontainmoreelectrons (n类型) orfewerelectrons (p类型) . examplesofcommonlyusedsemiconductorsaresiliconandgermanium.phosphorousandboronaretwoelementsthatareusedtodopen-type，9，10 atransistorisconstructedbycreatingasandwichofdifferen

5、tlydopedsemiconductorlayers.thetwomostcommontype the bipolar-junction转换场效应晶体管(fet )配对晶体管配置，10，11，2， thisfigureshowsboththesiliconstructuresoftheseelementsandtheirgraphicalsymbolicrepresentationaswouldbeseeninacircuitdiagram。 BJT shown is an npn晶体管， becauseitiscomposedofasandwichofn-p-ndopedsilicon.w

6、henasmallcurrentisinjectedintothe alargercurrentisenabledtoflowfromthecol 用于电路图中的符号，当小电流注入基极时，可以从集电极向发射极流过大的电流。11、12、2、防盗通道防盗、whenavoltageisapplies :防盗分类辅助系统acurrentisenabledtoflowfromthedraintothesource.itiscalledn -通道。 becausethegatevoltageinducesan-channelwithinthesubstrate，enablingcurrenttoflowb

7、etweenthen-regions .向绝缘的男同性恋施加电压的男同性恋电压在基板上、12、13、3、anotherbasicsemiconductorstructureshowninfigure2.1isa二极管、whichisformedsimplybyajunctionofn-typeandp-type silic、13、14、3、specialdiodescanbecreatedthatemitlightwhenavoltageisapplied.appriately enough、thesecomponentsarecalledlightemi or LEDs.thesesmall

8、ightsaremanufacturedbythemillionsandarefoundindiverseapplicationsfromtelephonestotrafficlights .这样的14 theresultingsmallchipofsemiconductormaterialonwhichatransistordiodeisfabricatedcanbeencasedinasmallplasticpackageforprotecti aminationfromtheoutsideworld.4用塑料封装对半导体材料制作晶体管和二极管的小芯片进行损伤和防止来自外部的污染。 十五、

9、十六、四、 smallwiresareconnectedwithinthispackagebetweenthesemiconductorsandwichandpinsthatprotrudefromthepackagetomakeelectricalcontact dcircuit .为了与(使用了该晶体管的)电路的桥部分连接，从封装内突出。16、17、4、onceyouhaveseveraldiscretetransistors、digitallogiccanbebuiltbydirectlywiringthesecomponentstogether.thecircuitwi butanys

10、ubstantialamountofdigitallogicwillbeverybulky。 becauseseveraltransistorsarerequiredtoimplementeachofthevarioustypesoflogicgates .所有实质的数字逻辑(电路)对于在各种逻辑男同性恋下实现各自是必要的atthetimeoftheinventionofthetransistorin 1947 byjohnbardeen、Walter Brattain、and William Shockley，以及theonlywaytoassemblemultipletransistors

11、intoasinglecircuitwastobuyseparatediscretetransistorsandwirethemtogether.in 1959。 jackilbyandrobertnoyceindependentlyinventedameansoffabricatingmultipletransistorsonasingleslabofsemiconductormaterial . 在同一半导体材料上制作多个晶体管的方法，18、19、5，theirinventionwouldcometobeknownastheintegratedcircuit，or IC， whichist

12、hefoundationofourmoderncomputerizedworld.anicissocalledbecauseitintegratesmultipletransistorsanddiodesontothesamessamessam adofhavingtosolderindividualwiresbetweendiscretecomponents。 aniccontainsmanysmallcomponentsthatarealreadywiredtogetherinthedesiredtopologytoformacircuit . ic包括19、20、6、A typical

13、IC、withoutitsplasticorceramicpackage，以及按照形成电路所需的拓扑分析连接的多个小组件。 isasquareorrectangularsilicondiemeasuringfrom2to 15 mmonanedge.dependingontheleveloftechnologyusedtomanufacturetheic theremaybeanywherefromadozentotensofindividualtransistorsonthissmallchip .各边距2mm至15mm的方形或矩形的硅片，在该小片上可能有数十个至数百万个晶体管6 thisamazingdensityofelectroniccomponentsindicatesthatthetransistorsandthewiresthatconnectthemareextremelysmallinsize.dimenne micrometers、withonemicrometer (1毫米) beingonemillionthofameter.toserveasareferencepoint