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1、WordsandExpressionsferroelectricn.[电]铁电物质；adj.铁电的volatileadj.易失，易变，挥发bipolaradj.双极性的hybridadj.混合的router路由器dynamicadj.动力学的，动态的leakagen.漏，泄漏refreshv.刷新，更新offsetv.弥补，抵消，n.偏移量maskn.掩码，掩模，屏蔽lithographic平版印刷的erasableadj.可擦除的，可抹去的programmableadj.可编程的ultraviolet(UV)n.紫外线，adj.紫外线floppydi
2、skn.软盘magneticmemories磁存储器opticalmemories光存储器electronicmemory电存储器moduleformat模块形式flipflop双稳态多谐振荡器；触发器inparallel并行的，平行的addresspointer地址指针payoff带来利益，偿清interfacecircuitry接口电路cachememoryn.高速缓冲存储器extradrive附加驱动datacomparator数据比较器storagecell存储单元trenchcapacitor沟道式电容器RAMRandomAccessMemo
3、ry随机存储器MOSabbr.(Metal-OxideSemiconductor)金属氧化物半导体CMOSabbr.(ComplementaryMetal-Oxide-Semiconductor)互补金属氧化物半导体SRAMStaticRandomAccessMemory静态随机存储器DRAMDynamicRandomAccessMemory动态随机存储器ROMReadOnlyMemory只读存储器EEPROMElectricallyErasableProgrammableROM电可擦除可编程只读存储器ECLEmitterCoupledLogic射极耦
4、合逻辑电路CAMContentAddressableMemory内容寻址存储器ALUarithmeticlogicunit逻辑运算单元Unit3MemoryDevicesMemoriescanbemadeinmechanical,magnetic,optical,biologicalandelectronictechnologies.Examplesofmagneticmemoriesaretapes,floppydisks,harddrivesandferroelectricRAMs.ExamplesofopticalmemoriesareCD-RO
5、Ms,rewrittableCDs.Electronicmemoryisusedextensivelyincomputerequipmentsinceitisthefastestavailable.Forapplicationswherespeedislessimportant,magneticandopticaltechnologiesareoftenused.AllelectronicmemorytodaycanbeinseparateICformat,moduleformat,orcanbepartofanICasamacrofunctionor
6、‘cell’.Inthetablebelowisanoverviewofsomeelectronicmemory.Theflip-flopAflip-flopisbasicallyabi-statecircuitinwhicheithera0or1statecanresides.Becauseofitssimplicity,theflip-flopisextremelyfast.Asabasicelement,theflip-flopisusedindigitalcircuitsandICs.Aflip-flopwillloseitsstatewhen
7、thesupplyvoltageisremoved.Therefore,itisvolatile.TheregisterAregisterisasetofflip-flopsinparallel.Typicallyaregisteris8,16,32or64bitswide.Oftenaregisterisusedtoholddata,addresspointers,etc.Aregisterisvolatileandveryfastjustliketheflip-flop.Table1.1TapyPropertiesRead/writeNon-vol
8、atileSpeedCost/bitFlip-flopOne-bitregister.Usua
