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1、英文翻译TheNumericalControlEngineBedTransformsFirstnumericalcontrolsystemdevelopmentsummarybriefhistoryandtendencyIn1946thefirstelectronicaccountingmachinewasbornintheworld,thisindicatedthehumanitycreatedhasbeenpossibletostrengthenandpartiallytoreplacethementallaborthetool.
2、Itwiththehumanitythesewhichintheagriculture,theindustrysocietycreatedonlyisstrengthensthephysicallaborthetooltocompare,gotupthequalityleap,enteredtheinformationsocietyforthehumanitytolaythefoundation.After6years,in1952,computertechnologyappliedtotheenginebed,thefirstnum
3、ericalcontrolenginebedwasborninUS.Fromthistimeon,thetraditionalenginebedhashadthearcherytargetchange.Sincenearlyhalfcentury,thenumericalcontrolsystemhasexperiencedtwostagesandsixgenerationofdevelopment.1.1Numericalcontrol(NC)stage(1952~1970)Theearlycomputeroperatingspee
4、dislow,wasnotbigtothensciencecomputationandthedataprocessinginfluence,butcouldnotadapttheenginebedreal-timecontrolrequest.Thepeoplecannotbutusenumerallogiccircuit"tobuild"tobecomeanenginebedspecialpurposecomputertotakethenumericalcontrolsystem,iscalledthehardwareconnect
5、ionnumericalcontrol(HARD-WIREDNC),shortfornumericalcontrol(NC).Alongwiththeprimarydevicedevelopment,thisstagehashadbeenthroughrepeatedlythreegenerations,namely1952firstgenerationof--electrontube;1959secondgenerationof--transistor;1965thirdgeneration--smallscaleintegrati
6、onelectriccircuit.1.2Computernumericalcontrol(CNC)stage(in1970~present)In1970,thegeneralminicomputeralreadyappearedandthemassproduction.Thereupontransplantsittakesthenumericalcontrolsystemthecorepart,fromthistimeonenteredthecomputernumericalcontrol(CNC)thestage("whichsh
7、ouldhavecomputerinfrontofthegeneral"twocharacterstoabbreviate).In1971,AmericanINTELCorporationintheworldfirsttimethecomputertwomostcorespart--logicunitsandthecontroller,usedthelargescaleintegratedcircuittechnologyintegrationontogetherthechip,calleditthemicroprocessor(MI
8、CROPROCESSOR),alsomightbecalledthecentralprocessingelement(tobecalledCPU).Themicroprocessorisappliedto1974inth
