计算机与通信专业英语4(共12章)

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1、Unit4TheMemoryHierarchySec.4-1Primary-MemoryOrganization?ExitUnit4TheMemoryHierarchySec.4-1Primary-MemoryOrganization?1SpecializedTermsandPhrases2GrammarPoints3QuestionsExitReturn1SpecializedTermsandPhrasesReturnExitPrimarymemory主存储器1-1semiconductorcomponent半导体

2、部件1-1nonvolatile不挥发的、永久性的1-2Bipolarsemiconductor双极型半导体1-4transistor-transistorlogic（TTL）device晶体管-晶体管逻辑器件1-5emitter-coupledlogic（ECL）device发射极耦合逻辑器件1-5metal-oxidesemiconductor（MOS）device金属氧化物半导体器件1-61SpecializedTermsandPhrasesdynamicrandom-accessmemory（DRAM）

3、动态随机存储器1-6transistorflip-flop晶体管触发器1-9staticrandom-accessmemory（SRAM）静态随机存储器1-9refreshing刷新1-9semiconductormemorymodule半导体存储器模块2-1electronicinterfacingdevice电子接口设备2-2memorycell基本存储单元2-3addressdecoder地址解码器2-6readwritebuffer读写缓冲器2-7ReturnExit1SpecializedT

4、ermsandPhrasesaddressregister地址寄存器2-9word-bufferregister字缓冲器2-9addressingandrefreshingcircuit寻址与刷新电路2-10printed-circuitboard印刷电路板3-1powersupplyandcabinet电源与机柜3-4memorycapacity存储容量4-4secondary-memorycapacity辅助存储容量4-6physicaladdress物理地址5-2logicaladdress逻辑地

5、址5-2baseaddress基址5-3index变址5-4ReturnExit1SpecializedTermsandPhrasesoffset偏移量5-5addressingmechanism寻址机制5-7programlevel（logicaladdress）程序级5-8hardwarelevel（physicaladdress）硬件级5-8high-orderinterleaving高序交叉存储6-4high-orderbit高序位6-5remainingbit保留位6-5addressoffs

6、et地址偏移量6-6sampleprogram样本程序6-10low-orderinterleaving低序交叉7-1memoryaccessoverlap存储器访问的重叠8-4ReturnExit1SpecializedTermsandPhrasesstatisticalmethod统计方法8-4part-wordaddressing部分字寻址9-2fullwordsandmultiplewords全字与多字9-7memory-managementunit（MMU）存储器管理单元10-1multiwor

7、dtransfer多字传送10-3fromaperformancestandpoint从性能的角度3-7trade-offs折中（选择，方案）3-8becompatiblewith与…兼容8-6ReturnExit1SpecializedTermsandPhrasesReturnExit2GrammarPoints①Theexceptionsarecomputerswithspecializedapplicationsrequiring“nonvolatile/memory”thatretainsitsinfor

8、mationwhenthereisnoelectricalpowersuppliedandcomputersthatmustoperateunderextremetemperatureconditions.1-2②Thisoverheadofcircuitsontheprinted-circuitboardofcon