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1、CHAPTER4TheComponentsoftheSystemUnitPortsandConnectorsIntroductionInthepastconnectingdevicestoyourcomputerareateasewhenweonlyusethekeyboard,mouse,monitorandprintersbutnowWehavetodealwithUSB,FireWire,networkjacksandanassortmentofaudioandvideoconnections.Allthosewillbepresentedinthisp
2、resentationSimplePCWithonlymouseNewtypesofConnectorsUSBarethekeyboardandprinterfornewdevicesasmostpopularTechnologygrewWhatarePorts?Oncomputer,aportisgenerallyaspecificplaceforbeingphysicallyconnectedtosomeotherdevice,usuallywithasocketorplugwhichwecallConnectorsTypicalComputerPortf
3、oundbehindadesktopPCWhatareConnectors?Aconnectorisanyconnectorusedwithincomputersortoconnectcomputerstonetworks,printersorotherdevices.ManytypesofcomputerconnectorsThePS/2ConnectorThePS/2connectorareuseforconnectingkeyboardandmouseonthemodernPCs.ThePS2mouseconnectorandportisusuallyg
4、reenincolourtodistinguishitfromthePS2keyboard,whichispurple.TheUSBPortUniversalSerialBus:aprotocolfortransferringdatatoandfromdigitaldevices.ManydigitalcamerasandmemorycardreadersconnecttotheUSBportonacomputer.TheFirewireIEEE1394PortAtypeofcablingtechnologyfortransferringdatatoandfr
5、omdigitaldevicesathighspeed.FireWirearetypicallyfasterthanthosethatconnectviaUSB.TheRJ45EthernetPortLANor(LocalAreaNetwork)usesaCAT5cableandaRJ45connection.TheCAT5cable?isalsocalledtheEthernetCable.Networkconnectiongenerallyusesa10/100Mbpsspeed.Thismeansithastwodifferentspeeds10Mbps
6、and100Mbps.DB25ParallelPortTheprinterconnectstoyourcomputerwithaParallelconnector. Thisconnectorhas25pins.Parallelmeansthedeviceiscapableofreceivingmorethanonebitatatime(thatis,itreceivesseveralbitsinparallel).EndofPresentationThankyouforyourtimeIhopethispresentationwillbeinformativ
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