计算机专业英语影印版(Computing-Essentials-2008)课后答案大全——第七单元C

ComputingEssentials2008Chapter7:InputandOutputKeyTermsPage1of7KeyTermsKeyTermDefinitionactive-matrixmonitor(193)Atypeofflat-panelmonitorwhereeachpixelisindependentlyactivated.(Seealsothinfilmtransistor(TFT)monitor)barcode(187)Theverticalzebra-stripedmarksprintedonproductcontainers.barcodereader(187)Containsphotoelectriccellsthatscanorreadbarcodes.(Seealsobarcodescanner)barcodescanner(187)Containsphotoelectriccellsthatscanorreadbarcodes.(Seealsobarcodereader)cathode-raytube(CRT)monitor(193)Themostcommontypeofmonitorthataretypicallyplaceddirectlyonthesystemunitoronthedesktop.clarity(192)Thequalityandsharpnessofthedisplayedimages.combinationkey(183)Akey,thatwhenhelddownincombinationwithanotherkey,performsanaction.cordlessmouse(185)Abattery-powereddevicethattypicallyusesradiowavesorinfraredlightwavestocommunicatewiththesystemunit.(Seealsowirelessmouse)dataprojector(194)Specializeddevicessimilarthatconnecttomicrocomputersandprojectcomputeroutputjustasitwouldappearonamonitor.digitalcamera(188)Imagesarerecordeddigitallyonadiskorinthecamera’smemoryratherthanonfilmdigitalmediaplayer(198)Aspecializeddeviceforstoring,transferring,andplayingaudiofiles.(Seealsodigitalmusicplayer)digitalmusicplayer(198)Aspecializeddeviceforstoring,transferring,andplayingaudiofiles.(Seealsodigitalmediaplayer)digitalvideocamera(189)Recordmotiondigitallyonadiskorinthecamera’smemory.displayscreen(192)Acomputerdevicethatpresentsvisualimagesoftextandgraphics.(Seealsomonitor)dot-matrixprinter(197)Atypeofprinterthatformscharactersandimagesusingaseriesofsmallpinsonaprinthead.dotpitch(193)Afunctionofamonitorthatisthedistancebetweeneachpixel.(Seealsopixelpitch)dots-per-inch(dpi)(195)Themeasurementofprinterresolution,themoredots-per-inchthebetterthequalityoftheimageprinted.dual-scanmonitor(193)Typeofflat-panelmonitorthatcreateimagesbyscanningtheentirescreen.(Seealsopassive-matrixmonitor)dumbterminal(199)Atypeofterminalthatisusedtoinputandreceivedata,butcannotprocessdataindependently.e-book(193)Handheld,book-sizeddevicesthatdisplaytextandgraphics.ergonomickeyboard(182)Atypeofkeyboarddesignedspecificallytoalleviatewriststrainassociatedwiththerepetitivemovementsoftyping.faxmachine(198)Adeviceforsendingandreceivingimagesovertelephonelines.flat-panelmonitor(193)AtypeofmonitorthatismuchthinnerandrequireslesspowertooperatethanCRTsflatbedscanner(186)TheimagetobescannedisplacedonaglasssurfaceandComputingEssentials2008Chapter7:InputandOutputKeyTermsPage2of7thescannerrecordstheimagefrombelow.flexiblekeyboard(182)Akeyboarddesignedtofoldorrollupforeasypackingorstorage.handwritingrecognitionsoftware(185)Translateshandwrittennotesintoaformthatthesystemunitcanprocess.headphones(197)Anaudio-outputdevicehigh-definitiontelevision(HDTV)(194)Adigitizedtelevisionoutputthatdeliversamuchclearerandmoredetailedwide-screenpicturethanregulartelevision.ink-jetprinter(195)Atypeofprinterthatspraysinkathighspeedontothesurfaceofpaper.intelligentterminal(199)Amicrocomputerwithcommunicationssoftwareandatelephonehookup(modem)orothercommunicationslink.Internettelephone(199)Specializedinputandoutputdevicesforreceivingandsendingvoicecommunication.Internettelephony(199)AtypeofcommunicationssystemthatusestheInternetratherthantraditionalcommunicationlinestosupportvoicecommunication.(SealsoIPtelephony,voiceoverIP)IPtelephony(199)AtypeofcommunicationssystemthatusestheInternetratherthantraditionalcommunicationlinestosupportvoicecommunication.(SealsoInternettelephony,voiceoverIP)joystick(185)Inputdeviceforcomputergames.keyboard(182)Convertnumbers,letters,andspecialcharactersthatpeopleunderstandintoelectricalsignals.laserprinter(195)Atypeofprinterthatusesalaserlightbeamtoproduceimageswithexcellentletterandgraphicsquality.lightpen(185)Alight-sensitivepen-likedevice,whichwhenplacedagainstamonitor,itclosesaphotoelectriccircuitandidentifiesthespotforenteringormodifyingdata.liquidcrystaldisplay(LCD)(193)Athin,flatdisplaymadeupofanynumberofcolorormonochromepixelsarrayedinfrontofalightsourceorreflector.magnetic-cardreader(187)Amachinethatreadsencodedinformationstoredonathinmagneticstriplocatedonthebackofacard.magnetic-inkcharacterrecognition(MICR)(188)Usedbybankstoautomaticallyreadnumbersonthebottomofchecksanddepositslips.mechanicalmouse(184)Ithasaballonthebottomandisattachedwithacordtothesystemunit.monitor(192)Acomputerdevicethatpresentsvisualimagesoftextandgraphics.(Seealsodisplayscreen)mouse(184)Aninputdevicethatcontrolsapointerthatisdisplayedonthemonitor.mousepointer(184)Oftenintheformofanarrow,itmovesonthescreenastheusermovesthecomputermousemultifunctionaldevice(MFD)(198)Atypeofcombinationinput/outputdevicethatcombinesthecapabilitiesofascanner,printer,fax,andcopymachine.networkterminal(199)Atypeofterminalthatdoesnothaveahard-diskdriveandmustrelyonahostcomputerorserverforapplicationandComputingEssentials2008Chapter7:InputandOutputKeyTermsPage3of7systemsoftware.(Seealsothinclient)numerickeypad(183)Usuallylocatedontheright-sideofakeyboard,itisusedtoenternumbersandarithmeticsymbols.optical-characterre