visual display units - monitors
Post on 18-Nov-2014
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VISUALDISPLAYUNITDefinition:Avisualdisplayunitisapieceofelectricalequipmentwhichdisplaysimages generatedbydevicessuchascomputers,withoutproducingapermanentrecord.The monitorcomprisesthedisplaydevice,circuitry,andanenclosure.
AmrithKrishna,
S4,CSEA,FISAT
WorkingofabasicMonitor
Afocusedbeamofelectronsfromelectrongunstrikethefluorescentscreen Shadesofimageisformedsectionbysectioncausingimagetobeformed.
ThepositionofbeamcorrespondstoXandYcoordinatepositionandIntensitybyZaxis Control.
Thesmallestaddressiblespotonscreenispixel
TypesofMonitors
CRTCathodeRayTube LCDTFT Plasma FDUFlexibleDisplayUnits TouchScreenMonitors
HowcanYoumeasureMonitor?
AspectRatio
ScreenSize
Colours
HowcanYoumeasureMonitor?
Width:Height 4:3normal 16:9DVDFormat
AspectRatio
HowcanYoumeasureMonitor?
Measuredininches Measuredfromonecornertotheother diagonallyoppositetoit
ScreenSize
HowcanYoumeasureMonitor?
HowcanYoumeasureMonitor?
AbilityofmonitortodisplayColourrange. Alsodependsonvideocard
Colours
HowcanYoumeasureMonitor?Monochrome
Colours
HowcanYoumeasureMonitor?ColorGraphicsAdapter(CGA)
Colours
16colours
HowcanYoumeasureMonitor?EnhancedGraphicAdapter
Colours
16colours
ThankYou
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