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1、CHAPTER4TheComponentsoftheSystemUnitPortsandConnectorsIntroductionInthepastconnectingdevicestoyourcomputerareateasewhenweonlyusethekeyboard,mouse,monitorandprintersbutnowWehavetodealwithUSB,FireWire,networkjacksandanassortmentofaudioandvideoconnections.Allthosewillbepresentedinthispre
2、sentationSimplePCWithonlymouseNewtypesofConnectorsUSBarethekeyboardandprinterfornewdevicesasmostpopularTechnologygrewWhatarePorts?Oncomputer,aportisgenerallyaspecificplaceforbeingphysicallyconnectedtosomeotherdevice,usuallywithasocketorplugwhichwecallConnectorsTypicalComputerPortfound
3、behindadesktopPCWhatareConnectors?Aconnectorisanyconnectorusedwithincomputersortoconnectcomputerstonetworks,printersorotherdevices.ManytypesofcomputerconnectorsThePS/2ConnectorThePS/2connectorareuseforconnectingkeyboardandmouseonthemodernPCs.ThePS2mouseconnectorandportisusuallygreenin
4、colourtodistinguishitfromthePS2keyboard,whichispurple.TheUSBPortUniversalSerialBus:aprotocolfortransferringdatatoandfromdigitaldevices.ManydigitalcamerasandmemorycardreadersconnecttotheUSBportonacomputer.TheFirewireIEEE1394PortAtypeofcablingtechnologyfortransferringdatatoandfromdigita
5、ldevicesathighspeed.FireWirearetypicallyfasterthanthosethatconnectviaUSB.TheRJ45EthernetPortLANor(LocalAreaNetwork)usesaCAT5cableandaRJ45connection.TheCAT5cable?isalsocalledtheEthernetCable.Networkconnectiongenerallyusesa10/100Mbpsspeed.Thismeansithastwodifferentspeeds10Mbpsand100Mbps
6、.DB25ParallelPortTheprinterconnectstoyourcomputerwithaParallelconnector. Thisconnectorhas25pins.Parallelmeansthedeviceiscapableofreceivingmorethanonebitatatime(thatis,itreceivesseveralbitsinparallel).EndofPresentationThankyouforyourtimeIhopethispresentationwillbeinformative
