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bean counter is a a two-stage physical data representation made of different tubes with jellybeans, so that the volume of jellybeans corresponds to the memory usage or port network traffic of a computer. taste screen is a non-visual visualization device, which drips controlled quantities of flavoring chemicals as a thin liquid residue on top of a computer monitor's coating. a user can sample the dispensed flavor by touching his tongue to the computer screen, tasting the flavor appropriate to the user’s task.