chapter 6 output 7. other output devices课件

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1、CHAPTER6outputOtherOutputDevicesSomeOutputDevicesVideoMonitorSoundControllingOtherMachinesPaperTypesofOutputSoftCopyHardCopyCommunicationsChannelScreenOutput–SoftCopyVideoMonitorAlsocalledVideoDisplayTerminal(VDT)Imageexistsinvideomemory—VRAMMonitorsizeismeasure

2、ddiagonallyacrossthescreenACRTisatelevision-stylemonitorItsfeaturesinclude:ClearimageQuickresponsetimeLowcostVerypopularCRT(CathodeRayTube)FeaturesofCRTDisplaysDisplaytextandgraphicsMonitorsdifferinresolutionStandardsSVGA–1024x768,1208x1024and1600x1200XGA–hassam

3、eresolutionsbutsupportsmorecoloursScreensizesvaryfrom15”to21”LCDscompriseflat-panelmonitorsFoundonwatches,calculators,digitalcamerasandnotebookcomputersLighterweightCrisp,clearimagesExtraviewingareaforsamesizeMoreexpensivetobuyConsumelesspowerLCD(LiquidCrystalDi

4、splay)PaperOutput–HardCopyAprinterisadevicethatproducesoutputonpaperMostprinterstodaycanproducebothtextandgraphicsTwotypesofprinters:ImpactprintersNon-impactprintersImpactPrintersThereissomephysicalcontactwiththepapertoproducetheimageiephysicallystrikingthepaper

5、TypesLineprintersDotmatrixprintersLineprintersUsedbymainframesforjobsthatneedalargevolumeofprintingLimitedcharactersavailablePrintanentirelineatatimeCheaptorunNothighqualityLinePrinterDotMatrixPrinterHaveaprintheadmadeupofcolumnsofpinsThepinsformcharactersandim

6、agesaspatternsofdotsproducedwhenthepinsstrikethepaperReasonablequalitytextandgraphicsInexpensivetobuyandrunNoisyNon-ImpactPrintersLaserPrintersInk-jetprintersBubble-jetprintersLaserPrintersLaserprintersImagetransferredtopaperwithalaserbeamFasterandmoreexpensive

7、thandot-matrixHigh-resolutionoutputExpensivetobuyQuiteexpensivetorunInk-JetPrintersInk-jetDotsofinkaresprayedontothepapertoformtheimageReasonablyhighqualityAvailableincolourorB/WSpeedmeasuredinpagesperminuteReasonablypricedExpensivetorunPlottersUsedbygraphicdesi

8、gners/architectsImagetransferredtopaperwithinkpensVeryhighresolutionExcellentforscientificandengineeringapplicationsPrintingTermsDotsperinch(dpi)Pagesperminute(ppm)Ch