[1] Direct Current - Gleichstrom

[2] Device Confirmation (C/I channel code)

[3] Device Control

[4] Data Channel

[5] Data Collector

[6] Data Check

[7] Data Classifier

[8] Data Control

[9] Data Communication(s)

[10] Data

[11] Data Cartridge

[12] Disconnected Components (s.a. 12.))

[13] Digital Computer

[14] Disc Controller

[15] Disc Check

[16] Development Center (->”NASA Acronym List”)

[17] Display Coupler (->”NASA Acronym List”)

[18] Decimal Classification

[19] District of Columbia - USA-Staatenkürzel

[20] Drafting Committee