英文電腦配置介紹

INPUTDEVICESANDOUTPUTDEVICES

Jill.zengSpeaker-Outputdevice-Thepresidingofficerinalegislativeassembly,esp.theHouseofRepresentativesScanner

-Adeviceforexamining,reading,ormonitoringsomething,inparticular-OutputdeviceConceptkeyboard

-Inputdevice-Overlaykeyboardsareoftenusedasaquickandeasywaytoinputitemswithjusttwobuttons.Trackerball-Inputdevice-Atrackballisapointingdeviceconsistingofaballheldbyasocketcontainingsensorstodetectarotationoftheballabouttwoaxes--likeanupside-downmousewithanexposedprotrudingball.Opticalmark-Inputdevice-ManytraditionalOMRdevicesworkwithadedicatedscannerdevicethatshinesabeamoflightontotheformpaper.recognition(OMR)-Inputdevice-Inputdevice-Thecontrastingreflectivityatpredeterminedpositionsonapageisthenusedtodetectthemarkedareasbecausetheyreflectlesslightthantheblankareasofthepaper.Plotter-Outputdevice-Theplotterisacomputerprinterforprintingvectorgraphics.

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