H: Header (סיומת קובץ)
H&J: Hyphenation And Justification (תוכנה)
H-MUX: Hybrid MUltipleXer
H/PC: Hand-held Personal Computer (חומרה)
H/V: Horizontal/Vertical
H/W: HardWare
HA: Header Authentication
HA: High Availability
HACMP: High Availability Cluster Multi-Processing (י.ב.מ)
HAI: Hardware Accelerator Interface (חומרה)
HAL: Hard Array Logic
HAL: Hardware Abstraction Layer
HAL: Heuristically Programmed Algorithmic
HAL: Home Automated Living
HAL: House-programmed Array Logic
HALO: High Altitude Long Operation
HAP: Host Access Protocol
HAS: Home Automation System
HASP: Houston Automatic Spooling Priority
HAT: Hashed Address Table
HBA: Host Bus Adapter
HBCI: Home Banking Computer Interface
HBI: Horizontal Blanking Interval (חומרה)
HCA: Hich-Contrast Addressing (חומרה) (Sharp)
HCG: High-Contrast Addressing
HCI: Host Controller Interface
HCL: Hardware Compatibility List
HCL: Host Control Links
HCSDS: High-Capacity Satellite Digital Service
HCSS: High Capacity Storage System
HCTDS: High-Capacity Terrestrial Digital Service
HCU: Home Computer User
HD: Hard Disk (חומרה)
HD: High Density
HD-CD: High Definition Compact Disk
HD-DVD: High Definition Digital Video (or Versatile) Disk (חומרה)
HD-ROM: High Density Read Only Memory (חומרה)
HDA: Head Disk Assembly
HDC: Hard Disk Controller
HDD: Hard Disk Drive (חומרה)
HDF: Hierarchical Data Format
HDH: Hdlc Distant Host
HDI: Head to Disk Interference
HDI: Hoops Device Interface
HDL: Hardware Description Language
HDLC: High-level Data-Link Control
HDLP: High-Level Data Link Protocol
HDM: Hardware Device Module (חומרה)
HDML: Handheld Device Markup Language
HDMOS: High Density Metal Oxide Semiconductor
HDR: HeaDeR
HDR: High Dynamic Range
HDR: Host Data Replicator (מסדי נתונים)
HDSC: High Density Signal Carrier (DEC)
HDSL: High bit rate Digital Subscriber Line (תקשורת)
HDSM: Heterogeneous Distributed Shared Memory (חומרה)
HDSS: Holographic Data Storage System
HDT: Hawaii Daylight Time
HDT: Host Digital Terminal
HDTV: High-Definition TeleVision (חומרה)
HDVD: High Definition Volumetric Display
HDW: HarDWare
HDx: Half DupleX (תקשורת)
HEC: Header Error Check (תקשורת)
HEL: Hardware Emulation Layer
HEP: Horizontal Enterprise Portal
HEPNET: High Energy Physics NETwork
HES: Home Entertainment System (חומרה)
HEX: HEXadecimal
HF: High Frequency
HFC: Hybrid Fiber-Coaxial (חומרה)
HFEP: Host - Front End Protocol (רשתות)
HFS: Hierarchical File System (מערכות הפעלה) (אפל)
HFT: High Function Terminal (י.ב.מ)
HFT: Host Function Table (תוכנה)
HGA: Hercules Graphics Adapter
HGC: Hercules Graphics Card (חומרה)
HGCP: Hercules Graphics Card Plus
HGML: Hypertext General Markup Language
HIC: Hybrid Integrated Circuit
HID: High-Intensity Discharge
HID: Human Interface Device (חומרה)
HIF: Hyper-g Interchange Format (סיומת קובץ)
HiFD: HIgh-capacity Floppy Disk (חומרה) (Sony)
HIFI: Hypertext Interface For Information
HIL: Human Interface Link (HP)
HIMEM: HIgh MEMory
HIP: Hardware Instrumentation Package (חומרה)
HIPERLAN: HIgh-PErformance Radio Local Area Network (רשתות)
HIPPI: HIgh Performance Parallel Interface (חומרה)
HIRD: Hurd of Interfaces Representing Depth (מערכות הפעלה) (GNU)
HITS: Hypertext-Induced Topic Search
HJB: HotJava Browser (Sun)
HKCC: HKey_Current_Config (מערכות הפעלה) (מיקרוסופט)
HKCR: HKey_Classes_Root (מערכות הפעלה) (מיקרוסופט)
HKCU: HKey_Current_User (מערכות הפעלה) (מיקרוסופט)
HKDD: HKey_Dyn_Data (מערכות הפעלה) (מיקרוסופט)
HKLM: HKey_Local_Machine (מערכות הפעלה) (מיקרוסופט)
HKU: HKey_Users (מערכות הפעלה) (מיקרוסופט)
HLCO: High Low Close Open
HLD: Height, Length, Depth
HLHSR: Hidden-Line, Hidden-Surface Removal
HLL: High-Level Language (תוכנה)
HLLAPI: High-Level Language Application Programming Interface (תוכנה)
HLP: HeLP (סיומת קובץ)
HLQ: High Level Qualifier
HLR: Home Location Register
HLS: Hue, Luminance, Saturation
HLT: HaLT
HMA: High Memory Area
HMA: Hub Management Architecture
HMC: Highspeed Memory Controller
HMD: Head Mounted Display
HMI: Host Micro Interface (CompuServe)
HMI: Html Mail Interface (מיקרוסופט)
HMM: Hidden Markov Model
HMMP: HyperMedia Management Protocol
HMMU: Hardware Memory Management Unit (חומרה)
HMOS: High performance Metal Oxide Semiconductor
HMP: Host Monitoring Protocol
HNET: Holographic NEural Technology
HO-DSP: Higher Order Domain-Specific Part (רשתות)
HOB: High-Order Byte
HOD: Host-On-Demand
HOL: High Order Language
HOLAP: Hybrid On-Line OnLine Analytical Processing
HOOPS: Hierachical Object Orientated Picture System
HOPS: Hierarchical Object Orientated Picture System
HOTT: Hot Off The Tree
HOTW: Hot Off The Web
HOV: High Occupancy Vehicle
HP: Hewlett-Packard
HP-IB: Hewlett-Packard Interface Bus (חומרה) (HP)
HP-VUE: Hewlett-Packard Visual User Environment
HP/UX: Hewlett-Packard UniX (מערכות הפעלה) (HP)
HPA: High Performance Addressing
HPAS: Hypermedia Presentation and Authoring System
HPB: High Ping Bastard
HPC: High-Performance Computing
HPCA: High Performance Computer Architecture (חומרה)
HPCC: High-Performance Computing and Communications
HPDJ: Hewlett-Packard Desk Jet
HPF: High Performance Fortran
HPFS: High Performance File System (מערכות הפעלה) (י.ב.מ)
HPG: Hewlett-Packard Graphics
HPGL: Hewlett-Packard Graphics Language
HPLJ: Hewlett-Packard Laser Jet
HPLT: High Productivity Languages/Tools
HPNA: Home Phoneline Networking Alliance (ארגונים)
HPOFS: High Performance Optical File System
HPOM: Home Page Object Model (מיקרוסופט)
HPPA: Hewlett-Packard Precision Architecture
HPPCL: Hewlett-Packard Printer Control Language
HPPE: High Performance Processing Element (חומרה)
HPPI: High-Performance Peripheral Interface
HPR: High Performance Routing (י.ב.מ)
HPSA: High Parallel System Architecture (חומרה)
HPSB: High-Performance Serial Bus (חומרה)
HPUX: Hewlett-Packard UniX
HPW: High Performance Workstation (Sun)
HQ: HeadQuarter
HR: High-Rate
HR: Human Resource
HRAA: High Resolution Anti Aliasing
HRAD: Hosted Rapid Application Development
HRC: Hybrid Ring Control
HREF: Hypertext REFerence
HRG: High Resolution Graphics
HRIS: Human Resource Information System
HRMS: Human Resource Management System
HRTF: Head-Related Transfer Function
HS: High Speed
HSB: Hue, Saturation, Brightness
HSC: Help and Support Center (מערכות הפעלה) (מיקרוסופט)
HSC: Hierarchical Storage Controller
HSC: High Speed Channel
HSCSD: High-Speed Circuit-Switched Data
HSFS: High Sierra File System (מערכות הפעלה)
HSI: High Speed Interface
HSI: Hue, Saturation, Intensity
HSL: Hue, Saturation, Luminance
HSLAN: High Speed Local Area Network
HSLN: High Speed Local Network
HSM: Hierarchical Storage Management
HSM: Hitachi System Manager
HSMOS: High Speed Metal Oxide Semiconductor
HSP: High Speed Printer
HSR: Horizontal Scan Rate (חומרה)
HSRP: Hot Standby Router Protocol (רשתות) (Cisco)
HSSDS: High Speed Switched Digital Service
HSSI: High Speed Serial Interface
HST: Hawaii Standard Time
HST: High Speed Technology (3Com)
HST: HiSTory
HST: HoST
HSV: Hue, Saturation, Value
HSYNC: Horizontal SYNChronization (חומרה)
HT: Horizontal Tab
HT: Hyper Threading (חומרה)(אינטל)
HTA: HyperText Application (רשתות)
HTCPCP: Hyper Text Coffee Pot Control Protocol (רשתות)
HTDM: Hybrid Time Division Multiplexing
HTH: Hope This Helps (הודעות)
HTL: High Threshold Logic (חומרה)
HTML: HyperText Markup Language
HTTP: HyperText Transport (or Transfer) Protocol
HTTP-NG: HyperText Transfer Protocol - Next Generation
HTTPD: HyperText Transfer Protocol Daemon
HTTPS: HyperText Transport (or Transfer) Protocol Secure
HUD: Heads Up Display
HUMAN: High-speed Unlicensed Metropolitan Area Network (רשתות)
HURD: Hird of Unix-Replacing Daemons (מערכות הפעלה) (GNU)
HUT: Hopkins Ultraviolet Telescope
HVC: Hue, Value, Chroma
HVD: High Voltage Differential (חומרה)
HVP: Horizontal and Vertical Position
HVS: Human Visual System
HW: HardWare
HWCP: HardWare Code Page
HWD: Height, Width, Depth
HWDM: Hyperfine Wavelength-Division Multiplexing (תקשורת)
HWIH: Here's What I Have (הודעות)
HYTEA: HYperText Environment for Authoring
Hz: HertZ
