A multiplexer, ko "mux" a takaice, ita ce na'ura da ke zabar ɗaya daga cikin siginar shigarwa da yawa kuma ta tura da zaɓaɓɓen shigarwar zuwa layin fitarwa guda ɗaya. A wasu kalmomi, Multixer yana ba da damar siginar shigarwa da yawa don raba layin fitarwa guda ɗaya ta hanyar sauyawa tsakanin siginar shigarwa dangane da siginar sarrafawa. Ana amfani da na'urori masu yawa a cikin da'irori na dijital da tsarin sadarwa don haɓaka amfani da iyakataccen albarkatu da kuma ba da damar na'urori da yawa don raba tashoshi ɗaya.