TheoriginalPC/104bushasdoneagreatjobofsupportingthe16-bitISAstandard.However,certainapplicati***requiregreaterthroughput.Therefore,PC/104-Pluswasdefinedandstandardized.Itisthe32-bitstandardmigratedfromthedesktoptotheembeddedworldwhilestillofferingthesamefunctionalities.PC/104-PlusisaPCIimplementationonastackableboardwhilemaintainingthe3.6"x3.8"formfactor.PC/104-PlusmodulescanalsoincludeoriginalPC/104connectorstoallowthemostsystemconfigurationflexibility.AthirdconnectoroppositethePC/104connectorssupportsthePCIbus.Basicallytheelectricalspecificati***ofthePC/104-PlusbusarecompliantwiththePCIsignals,except64-bitextensi***,JTAG,PRSNTorCLKRUNsignals.Accordingtothespecificati***ofPC/104-Plus,PC/104-PlusmodulesareinstalledandconfiguredbyswitchingCLK,IDSEL,INT,REQandGNTsignalsthroughmultiplexerstotheappropriateconnecti***.RotaryswitchonADLINKPCM-xxxx+isusedforthesesignalsswitching.)