烹饪专业数学---电子教案下载_沈阳烹饪专业技术学院_烹饪专业数学---电子教案下载(3)

6．Microprocessorshavecomealongwaysince1971whenthefirstmicroprocessor,theIntel4004,wasdeveloped。三．Exercises(练习及参考答案):1．TranslatethefollowingwordsandexpressionsintoEnglish。(1)电子器件：electroniccomponent(2)算术逻辑单元：arithmeticandlogicunit(ALU)(3)硅片：siliconchip(4)指令计数器：instructioncounter(5)时钟速度：clockspeed(6)译码器：decoder2．TranslatethefollowingscreenmessagesintoChinese。(1)、(3)、(4)、(8)3．TranslatethefollowingWindows95andDOS7。0screenmessagesintoChinese:(4)、(5)、(6)、(7)4．Answerthefollowingquestionsbriefly:(2)Towhichgenerationdothepresent-daycomputersbelong?Answer:Thefourthgeneration。

UNITTWOHardwareandConfigurationText2Memory一、Vocabulary(词汇):account：银行户头generate：产生，建立subscriber：订户word：字overwrite：覆盖二、Importantsentences(重点句):1．Themicrocomputer'smemoryconsistsofmainmemoryandsecondarystorage。2．Themainmemoryofmostcomputersiscomposedofrandomaccessmemory(RAM)。3．Mainmemoryonthecomputerisusedtostoreinstructionsanddatatemporarilywhiletheinstructionsarebeingexecutedanddataarebeingprocessed。三、Exercises(练习及参考答案):1．TranslatethefollowingwordsandexpressionsintoEnglish。

(1)随机存储器：RandomAccessMemory(RAM)(2)只读存储器：ReadOnlyMemory(ROM)(3)主存储器：mainmemory(4)辅助内存器：secondarystorage(5)标签：label(6)指令：instruction2．TranslatethefollowingscreenmessagesintoChinese。(1)、(3)、(4)、(9)3．TranslatethefollowingWindows95andDOS7。0screenmessagesintoChinese:(1)、(4)、(7)4．MultipleChoice:(1)、B(2)、B(3)、B(4)、AUNITTWOHardwareandConfigurationText3TheSystemBuses一、Vocabulary(词汇):origin：起点destination：终点address：寻址byte：字节nibble：半字节address-bus：地址总线register：寄存器control-bus：控制总线ISA(IndustryStandardArchitecture)：工业标准结构EISA(ExtendedIndustryStandardArchitecture)：扩展工业标准结构MCA(MicroChannelArchitecture)：微通道结构expansionbus：扩展总线adapter：适配器peripheral：外部设备faxmodem(ormodem)：调制解调器graphicsadapter：图形适配器NIC(NetworkInterfaceCard)：网络接口卡SCSI(SmallComputerSystemInterface)：小型计算机平台接口databus：数据总线datawidth：数据长度externalspeed：外部速度VESA(VideoElectronicStandardsAssociation)：视频电子标准协会PCI(PeripheralComponentInterconnect)：外围组件互连USB(UniversalSerialBus)：通用串行总线二．Importantsentences(重点句):1．Thedatabustransmitsdatabetweentheseunits。

2．Theaddressbusisusedtoselecttheoriginordestinationofsignalstransmittedthroughoneoftheotherbuses。3．Traditionally,astandardaddressbushas16lines,thatistosay,itcanaddress64KBdevices(1KB=1024incomputerjargon)。4．Thecontrol-busisusedforthesynchronizationofthesystem。5．Memoryislogicallyorganizedintowords6．8bitsarecalledabyte,4bitsanibble;thereisnootherspecificwordforothersizesofwords。三．Exercises(练习及参考答案):1．TranslatethefollowingwordsandexpressionsintoEnglish。

(1)databus(2)address-bus(3)control-bus(4)transmitdata(5)register(6)addressunit2．TranslatethefollowingscreenmessagesintoChinese。(1)、(8)、(9)3．TranslatethefollowingWindows95andDOS7。0screenmessagesintoChinese:(2)、(3)、(4)4．Putinthemissingwords:(1)、Acomputerhastwokindsofmemory,calledmainmemoryandsecondarymemory。(2)、Themostcommonmicrocomputersecondarystoragemediumisfloppydiskandharddisk。(3)、Inthecomputer,abyteconsistsofeightbits,representing256uniquebinarynumbers。

UNITTWOHardwareandConfigurationText5FloppyDisks一、Vocabulary(词汇):mainframecomputer：主机doubledensity：倍体积highdensity：高密度extended-density：扩展密度trackdensity：磁道密度read/writehead：读/写头read/writeslot：读/写槽口二．Importantsentences(重点句):1．In1972,IBMintroducedflexiblediskettesasamediumforloadingprogramsintomainframecomputers。Becausethedisksweresoflexible,theywerenicknamedfloppydisk。2．Floppydisks,alsocalleddiskettes,areavailableintwosize:3。

5and5。25inches。3．Lower-capacitydiskdrivescannotreadfromandwritetohigh-capacitydisks。4．FloppydiskdriversarecommonlyreferredtoastheAdriveandtheBdrive。三．Exercises(练习及参考答案):1．TranslatethefollowingwordsandexpressionsintoEnglish。(1)floppydiskdrive(2)medium(3)density(4)track(5)kilobyte(6)read/writehead2．TranslatethefollowingscreenmessagesintoChinese。(1)、(3)、(4)、(9)3．TranslatethefollowingWindows95andDOS7。0screenmessagesintoChinese:(2)、(6)、(8)UNITTWOHardwareandConfigurationText6HardDisks一、Vocabulary(词汇):gigabyte：千兆字节，吉字节actuationarm：存取臂accessarm：存取臂magneticoxidematerial：磁氧化材料cylinder：柱面head：磁头cylinderapproach：柱面操作模式二、Importantsentences(重点句):1．Harddisksstoredataonrigidaluminumorceramicplatters,coatedwithamagneticoxidematerial。

2．Cylindersareconcentricregionsontheharddiskplatterwithcylinder0usuallylocatedattheouteredge。3．Cylindernumbersstartatzero,soifyourharddiskhas900cylinders,theywillbenumberedfrom0-899。4．Theheadsofaharddiskareusedtoreadandwritedata。5．Headnumbersstartatzero,soifyourdrivehas9heads,theywillbenumberedfrom0-8。6．Asectoristhesmallestphysicallyaddressableunitofstorageonaharddisk。7．Sectornumbersstartatone,soifyourdrivehas17sectorsonatrack,theywillbenumberedfrom1to17。

三、Exercises(练习及参考答案):1．TranslatethefollowingwordsandexpressionsintoEnglish。(1)柱面：cylinder(2)存取：access(3)扇区：sector(4)硬盘：harddisk(5)千兆字节：gigabyte(6)兆字节：megabyte2．TranslatethefollowingscreenmessagesintoChinese。(1)、(4)、(8)3．TranslatethefollowingWindows95andDOS7。0screenmessagesintoChinese:(4)、(6)、(7)、(8)4．True/False?(1)、Formattingerasesalldataonthedisk。Answer:True(2)、A360KBfloppydiskcanstoreapproximately360,000binary-codedChinesecharacters。