Similar to 脊髄性筋萎縮症
 - Data Encryption StandardData Encryption Standard
 - DataScope
 - DataSpider Servista
 - DAW (ナチ親衛隊企業)German Equipment Works
 - DB-LK (航空機)Belyayev DB-LK
 - DbxDbx (noise reduction)
 - ダグラス DC-1Douglas DC-1
 - 国鉄DE10形ディーゼル機関車JNR Class DE10
 - DEC AlphaDEC Alpha