Digital book readers; Digital cellular phones; Digital colour copiers; Digital door locks; Digital film scanners; Digital input and output scanners; Digital media hubs; Digital media servers; Digital plotters; Digital projectors; Digital signal processors; Digital signs; Digital spoon scales; Digital telephones; Dog whistles; Electric sensors; Electrical plugs and sockets; Electrical sensor apparatus for sensing the presence or absence of individuals or objects by contact or pressure; Electri...