| HDM |
Hardware Device Module |
| HDMI |
High Definition Multimedia Interface |
| HDML |
Handheld Device Markup Language |
| HDN |
Hochgeschwindigkeits-Datennetz |
| HDPLD |
High Density Programmable Logic Device |
| HDR |
HDSL Dual Regenerator |
| HDR |
Header |
| HDS |
High Definition System |
| HDSC |
High Density Signal Carrier |
| HDSL |
High Bit/Data Rate/Speed Digital Subscriber Line/Link/Loop |
| HDTV |
High Definition Television |
| HDX |
Half Duplex |
| HE |
Head End |
| HE |
Höheneinheit (in Racks) |
| HEA |
Health/Higher Education Authority |
| HEAAC |
High Efficiency Advanced Audio Coder/Coding |
| HEAT |
Helpdesk Expert Automation Tool |
| HEC |
Header Error Control/Check |
| HECTOR |
Heterogeneous Computer Together |
| HEHO |
Head End Hop Off |
| HEL |
Hardware Emulation Layer |
| HEM |
Home, Entertainment, Multimedia |
| HEMP |
High-level Entity Management Protocol (Internet) |
| HEMS |
High-level Entity Management System (Internet) |
| HEMT |
High Electron Mobility Transistor |
| HEN |
Home Entertainment Network |
| HENSA |
Higher Education National Software Archive |
| HEO |
Highly Elliptical Orbit |
| HEP |
Heterogenous Element/multi Processor |
| HEPNET |
High Energy Physics Network |
| HERF |
High Energy Radio Frequency |
| HERT |
HERT/Hackers Emergency Response Team |
| HES |
Home Electronic System (Siemens) |
| HESSLA |
Hacktivismo Enhanced Source Software License Agreement |
| HEX |
hexadezimal |
| HF |
High Frequency/Functionality |
| HFC |
Hybrid Fiber Coax (Network) |
| HFD |
Hauptanschluss für Direktwahl/Direktruf |
| HFD |
Hot Fix Device |
| HFEP |
Host Front End Protocol |
| HFRG |
Gesetz über den Betrieb von Hochfrequenzgeräten |
| HFS |
Hierarchical/High Performance File System |
| HFT |
High Function Terminal |
| HGA |
Head Gimbal Assembly |
| HGA |
Hercules Graphics Adapter |
| HGA |
High Gain Antenna |
| HGC |
Hercules Graphics Card/Controller |
| HGML |
Hyper Graphics Markup Language |
| HHI |
Heinrich-Hertz-Institut, Berlin |
| HI |
Handover Interface |