HDC
[1] Harddisk Controller[2] Honeywell Digital Computer (Chip)
[3] Henry Draper Catalogue \{Astronomie\}
[4] Hierarchical Distributed Control
[5] Highly Developed Country
[6] Hybrid Device Controller
[7] Hydrodynamic Chromatography
[8] Hasselblad Data Camera (->""NASA" Acronym List") \{Astronomie\}