计算机专业英语影印版(Computing-Essentials-2008)课后答案大全——第七单元Chapter-7Input-and-Output.doc

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1、ComputingEssentials2008Chapter7:InputandOutputKeyTermsKeyTermDefinitionactive-matrixmonitor(193)Atypeofflat-panelmonitorwhereeachpixelisindependentlyactivated.(Seealsothinfilmtransistor(TFT)monitor)barcode(187)Theverticalzebra-stripedmarksprintedonproductcontainers.barcodereader(187)Containsphotoele

2、ctriccellsthatscanorreadbarcodes.(Seealsobarcodescanner)barcodescanner(187)Containsphotoelectriccellsthatscanorreadbarcodes.(Seealsobarcodereader)cathode-raytube(CRT)monitor(193)Themostcommontypeofmonitorthataretypicallyplaceddirectlyonthesystemunitoronthedesktop.clarity(192)Thequalityandsharpnessof

3、thedisplayedimages.combinationkey(183)Akey,thatwhenhelddownincombinationwithanotherkey,performsanaction.cordlessmouse(185)Abattery-powereddevicethattypicallyusesradiowavesorinfraredlightwavestocommunicatewiththesystemunit.(Seealsowirelessmouse)dataprojector(194)Specializeddevicessimilarthatconnectto

4、microcomputersandprojectcomputeroutputjustasitwouldappearonamonitor.digitalcamera(188)Imagesarerecordeddigitallyonadiskorinthecamera’smemoryratherthanonfilmdigitalmediaplayer(198)Aspecializeddeviceforstoring,transferring,andplayingaudiofiles.(Seealsodigitalmusicplayer)digitalmusicplayer(198)Aspecial

5、izeddeviceforstoring,transferring,andplayingaudiofiles.(Seealsodigitalmediaplayer)digitalvideocamera(189)Recordmotiondigitallyonadiskorinthecamera’smemory.displayscreen(192)Acomputerdevicethatpresentsvisualimagesoftextandgraphics.(Seealsomonitor)dot-matrixprinter(197)Atypeofprinterthatformscharacter

6、sandimagesusingaseriesofsmallpinsonaprinthead.dotpitch(193)Afunctionofamonitorthatisthedistancebetweeneachpixel.(Seealsopixelpitch)dots-per-inch(dpi)(195)Themeasurementofprinterresolution,themoredots-per-inchthebetterthequalityoftheimageprinted.dual-scanmonitor(193)Typeofflat-panelmonitorthatcreatei

7、magesbyscanningtheentirescreen.(Seealsopassive-matrixmonitor)dumbterminal(199)Atypeofterminalthatisusedtoinputandreceivedata,butcannotprocessdataindependently.e-book(193)Handheld,book-sizeddevicesthat