An acronym is an abbreviation of the first letters of a phrase or the long name of an organization that forms a word or conveys a message. In electronic communication or online documents, acronyms are used as writing shorthand or a method to communicate humor. Below, you will find an alphabetical listing for hundreds of computer related acronyms. 

[A][B][C][D][E][F][G][H][I][J][K][L][M][N][O][P][Q][R][S][T][U][V][W][XYZ]

[H]

HAL - Hardware Abstraction Layer
HAVI - Home Audio Visual Interoperatibility
HBL - Hue/Brightness/Luminosity
HCG - Hercules Graphics Card
HCS - Hard-Class Silica
HCT - Hardware Compatibility Tests
HD - High Density
HDA - Hard Disk Assembly
HDC - HardDisk Controller
HDCD - High Definition Compact Disc
HDD - HardDisk Drive
HDI - High Definition Imaging
HDLC - High level Data Link Control
HDR - Hard Disk Recording
HDR - High Dynamic Range
HDSS - Holographic Data Storage System
HEL - Hardware Emulation Layer
HFS - Hierarchical File System
HGC - Hercules Graphics Controller
HIC - Hybrid Integrated Circuit
HID - Human Interface Devices
HIV - Human Immunodeficiency Virus :(
HIR - Hidden Internal Registers
HIRD - HURD of Interafaces Representing Depth
HLR - Home Location Register
HLS - Hue/Lightness/Saturation
HMA - High Memory Area
HMP - Host Monitoring Protocol
HOE - Holographic Optical Elements
HP - Hewlett Packard
HPC - Hand-held Personal Computer
HPFS - High Performance File System
HPGL - Hewlett Packard Graphics Language
HPOM - Home Page Object Model
HPSB - High Performance Serial Bus
HRTF - Head-Related Transfer Function
HS - High Speed (modem connection)
HSB - Hue/Saturation/Brightness
HSCSD - High Speed Circuit-Switched Data
HSDRAM - High speed Synchronous Dynamic Random Access Memory
HSI - Hue/Saturation/Intensity
HSL - Hue/Saturation/Luminosity
HSM - Hierarchical Storage Management
HST - High Speed Technology
HSV - Hue/Saturation/Value
HT - HyperThreading
HTML - Hyper Text Markup Language
HTTP - Hyper Text Transfer Protocol
HUD - Heads-Up Display
HURD - HIRD of Unix Replacing Daemons
HVD - High Voltage Differential
HW - HardWare