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求一篇关于电脑起源的英语作文

发表时间：2024-07-18 12:15:18 来源：网友投稿

Computerstakenumerousphysicalforms.Earlyelectroniccomputerswerethesizeofalargeroom,consumingasmuchpowerasseveralhundredmodernpersonalcomputers.[1]Today,computerscanbemadesmallenoughtofitintoawristwatchandbepoweredfromawatchbattery.Societyhascometorecognizepersonalcomputersandtheirportableequivalent,thelaptopcomputer,asiconsoftheinformationage;theyarewhatmostpeoplethinkofasacomputer.However,themostcommonformofcomputerinusetodayisbyfartheembeddedcomputer.Embeddedcomputersaresmall,simpledevicesthatareoftenusedtocontrolotherdevices—forexample,theymaybefoundinmachinesrangingfromfighteraircrafttoindustrialrobots,digitalcameras,andevenchildren'stoys.

Acomputerinawristwatch.Theabilitytostoreandexecuteprogramsmakescomputersextremelyversatileanddistinguishesthemfromcalculators.TheChurch–Turingthesisisamathematicalstatementofthisversatility:Anycomputerwithacertainminimumcapabilityis,inprinciple,capableofperformingthesametasksthatanyothercomputercanperform.Therefore,computerswithcapabilityandcomplexityrangingfromthatofapersonaldigitalassistanttoasupercomputerareallabletoperformthesamecomputationaltaskssolongastimeandstoragecapacityarenotconsiderations.

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