

| Acronym | Sense | Language | Topics | 
|---|---|---|---|
| HSC | Hardware and Software Coordination | In English | → Software | 
| HSD | High-Speed Device | In English | |
| HSL | Hardware Simulation Laboratory | In English | → Research institutes → Computer simulation | 
| HSP | High-Speed Printer | In English | → Peripheral devices | 
| HSR | Hardware Status Register | In English | |
| HSR | High Speed Reader | In English | |
| HTC | Hybrid Technology Computer | In English | |
| HUL | Hardware Utilization List | In English | |
| HULL | Hardware Utilization and Location List | In English | |
| HVD | Holographic Versatile Disc | In English | → Memories → Data | 
| HW | Hardware | In English | |
| HW/SW | Hardware/Software | In English | → Software | 
| HWCI | Hardware Configuration Item | In English | |
| HWIL | Hardware In Loop | In English | |
| HYDAC | Hybrid Digital-Analog Computer | In English | |
| IAH | Interface Attachment Hardware | In English | → Human-computer interaction | 
| IBM | International Business Machines (https://www.ibm.com/) | In English | → Organizations and associations → Software | 
| ICDA | Integrated Cached Disk Array | In English | |
| ICSM | IEEE (Institute of Electrical and Electronics Engineers) Computer Systems Magazine | In English | → Serial publications, periodicals | 
| ID | Interface Device | In English | → Human-computer interaction | 
| IDAC | Integrated Digital-Analog Converter | In English | |
| IDC | IMBLMS Digital Computer | In English | |
| IDOT | Instrument Digital On-Line Transcriber | In English | |
| IDP | Interface Digital Processor | In English | → Human-computer interaction | 
| IDTC | IEEE (Institute of Electrical and Electronics Engineers) Design Test Computers | In English | → Serial publications, periodicals | 
| IHSR | Integrated Hardware/Software Review | In English | → Data → Software | 
| IHV | Independent Hardware Vendor | In English | → Trade | 
| IJMM | International Journal of Mini Microcomputers | In English | → Serial publications, periodicals → Electronics | 
| ILP | Instruction Level Parallelism | In English | |
| IM | Information Memory | In English | → Memories | 
| IMIC | Integrated Management Information Computer | In English | → Knowledge management | 
| IMP | Initial Memory Protection | In English | → Memories | 
| IOB | Input/Output Box | In English | → Data | 
| IOBPS | Input/Output Box and Peripheral Simulator | In English | → Data | 
| IOMMU | Input/Output Memory Management Unit | In English | → Memories | 
| IOP | Input/Output Processor | In English | → Data | 
| IP | Interfacing Processor | In English | → Human-computer interaction | 
| IP | Instrument Processor | In English | |
| IRAM | Input Random Access Memory | In English | → Memories | 
| IRQ | Interrupt Request | In English | |
| ITCmp | IEEE (Institute of Electrical and Electronics Engineers) Transactions on Computers | In English | → Serial publications, periodicals | 
| JEEC | Joint ECMA (European Computer Manufacturer's Association) ETSI (European Telecommunications Standards Institute) Committee | In English | → Organizations and associations → Standardization → Telecommunications | 
| JHDL | Just Another Hardware Definition Language (www.jhdl.org) | In English | → Programming languages | 
| KB | Keyboard | In English | → Human-computer interaction | 
| KBU | Keyboard Unit | In English | → Human-computer interaction | 
| KCRT | Keyboard Cathode-Ray Tube | In English | |
| KIP | Keyboard Input Processor | In English | → Human-computer interaction | 
| KU | Keyboard Unit | In English | → Human-computer interaction | 
| KVnT | Kibernetika i Vychislitel'naia Tekhnika = КиВТ | Кибернетика и вычислительная техника | In Russian | In Russian | → Serial publications, periodicals → Electronics | 
| LBM | Load Buffer Memory | In English | → Memories | 
| LISA | Local Integrated Software Architecture | In English | |
| LLCF | Launch and Landing Computational Facility | In English | → Astronautics | 
| LTHIS | Laboratory Test Hardware Inventory Status | In English | |
| LVDC | Launch Vehicle Digital Computer | In English | → Astronautics | 
| MAC | Multiaccess Computer | In English | |
| MADC | Multiplexer Analog-To-Digital Converter | In English | |
| MAID | Massive Array of Idle Disks | In English | |
| MAR | Memory Address Register | In English | → Memories | 
| MBM | Magnetic Bubble Memory | In English | → Memories | 
| MBPS | Main Bus Power Supply | In English | |
| MBSU | Main Bus Switching Unit | In English | |
| MC | Memory Configuration | In English | → Memories | 
| MC/EC | Mission-Critical/Embedded Computer | In English | |
| MCA | Main Console Assembly | In English | |
| MCCR | Mission-Critical Computer Resource | In English | |
| MCCS | Mission-Critical Computer System | In English | |
| MCF | Military Computer Family | In English | → Military engineering | 
| MCH | Micro Channel Hardware | In English | |
| MCH | Memory Controller Hub | In English | → Networks, communication | 
| MCM | Multichip Module | In English | |
| MDB | Main Memory Data Output Bus | In English | → Memories | 
| MDP | Mission Data Processing/Processor | In English | → Data processing | 
| MDS | Magnetic Disk System | In English | |
| MFC | Multiple-Flight Computer | In English | → Aeronautics, aircraft → Astronautics | 
| MIC | Memory Interface Connector | In English | → Memories | 
| MISC | Minimal Instruction Set Computer | In English | |
| MITS | Micro Instrumentation and Telemetry Systems | In English | |
| MLC | Mobile Launcher Computer | In English | → Astronautics | 
| MM | Main Memory | In English | → Memories | 
| MMC | Master Microprocessor Control | In English | → Electronics | 
| MMIP | Mass Memory Integration Plan | In English | → Memories | 
| MMT | Mass Memory Test | In English | → Memories | 
| MMU | Mass Memory Unit | In English | → Memories | 
| MMU | Memory Management Unit | In English | → Memories | 
| MMUS | Mass Memory Unit Simulator | In English | → Memories | 
| MOC | Mission Operations Computer | In English | |
| MOP | Mission Operations Processor | In English | |
| MPC | Memory Protection Check | In English | → Memories | 
| MPP | Massively Parallel Processor | In English | |
| MRAM | Magnetic Random Access Memory | In English | → Memories | 
| MRAM | Magnetoresistive Random Access Memory | In English | → Memories | 
| MRO | Memory Read-Out | In English | → Memories | 
| MROTD | Machine Readable Official Travel Documents | In English | → Tourism | 
| MRP | Machine Readable Passport | In English | → Tourism | 
| MRTD | Machine Readable Travel Document | In English | → Tourism | 
| MSK | Manual Select Keyboard | In English | |
| NAD | Network Adapter Device | In English | → Networks, communication | 
| NEC | Nippon Electric Company (www.nec.com) | In English | → Electrical engineering → Electronics → Japan | 
| NFS | Network File Server | In English | → Networks, communication → Files | 
| NHC | Notebook Hardware Control | In English | → Software | 
| NIP | Network Input Processor | In English | → Networks, communication | 
| NIP | Network Interface Processor | In English | → Human-computer interaction → Networks, communication | 
| NOS | Network Operating System | In English | → Networks, communication | 
| NSC | NASA Standard Computer | In English | → Astronautics → United States | 
| NSP | Network Signal Processing | In English | → Networks, communication | 
| NSP | Network Signal Processor | In English | → Networks, communication | 
| NVM | Nonvolatile Memory | In English | → Memories | 
| OAHTS | Orbiter Avionics Hardware Tracking System | In English | → Software → Aeronautics, aircraft → 6297 | 
| OBC | On-Board Computer | In English | |
| OCF | Orbiter Computational Facilities | In English | → Astronautics | 
| OCH | Orbiter Common Hardware | In English | → Astronautics | 
| ODDP | Object-Dependent Data Processor | In English | → Data | 
| OISC | One Instruction Set Computer | In English | |
| OLPC | One Laptop Per Child | In English | |
| OPC | Organic Photo Conductor | In English | → Peripheral devices | 
| ORAM | Output Random Access Memory | In English | → Memories | 
| PAL | Programmable Array Logic | In English | → Electronics | 
| PBIC | Programmable Buffer Interface Card | In English | → Software | 
| PBS | Print Batch Services | In English | → Software → Peripheral devices | 
| PC | Personal Computer = PK | Persoanlike kompjûter | In Frisian | In English | |
| PCAM | Punched-Card Accounting Machine | In English | → Accounting | 
| PCI | Peripheral Component Interconnect | In English | → Telecommunications | 
| PCMCIA | Personal Computer Memory Card International Association | In English | → Associations → Memories | 
| PCRAM | Phase Change Random Acces Memory | In English | → Memories | 
| PDP-1 | Programmed Data Processor-1 | In English | |
| PERM | Programmgesteuerte Elektronische Rechenanlage | In German | |
| PET | Personal Electronic Transactor | In English | |
| PEXI | Pupitre d'EXploitation Informatisé | In French | |
| PGSC | Payload and General-Support Computer | In English | → Astronautics | 
| PICC | Payload Interface Control Computer | In English | → Human-computer interaction → Astronautics | 
| PICO | Program In, Chip Out | In English | → Software | 
| PINCH | Payload Integration Nominal Cost Hardware | In English | → Astronautics | 
| PK | Persoanlike kompjûter = PC (look above) | In Frisian | |
| PK | Persona Komputilo | In Esperanto | |
| PLA | Programmable Logic Array | In English | → Electronics | 
| PLD | Programmable Logic Device | In English | → Electronics | 
| PLIMHR | Payload Integration Management Hardware Review | In English | → Management → Astronautics | 
| PMHL | Preferred Measurement Hardware List | In English | |
| PnP | Plug 'n play | In English | → Peripheral devices | 
| PORTALIS | POste de Référence Technique d'Accès aux Logiciels, Informations et Services | In French | → Software | 
| PROM | Programmable Read-Only Memory | In English | → Memories | 
| PSDE | Personal Systems Distribution Europe | In English | |
| PSP | PlayStation Portable | In English | → Entertainment | 
| PSU | Power Supply Unit | In English | → Electrical engineering | 
| PTCS | Propellant Tanking Computer System | In English | → Astronautics | 
| PUZ | Prozesatzeko Unitate Zentral | In Basque | |
| PWA | Private Write Area | In English | → Memories | 
| R2ML | REWERSE Rule Markup Language | In English | → Software | 
| RAID | Redundant Array of Independant Disks | In English | → Memories | 
| RAID | Redundant Array of Independent Disks | In English | → Memories | 
| RAID | Redundant Array of Inexpensive Disks | In English | |
| RAM | Random Access Memory | In English | → Memories | 
| RAMDAC | Random Access Memory Digital to Analog Converter | In English | → Memories | 
| RAX | Remote Access Computing System | In English | |
| RET | Resolution Enhancement Technology | In English | → Peripheral devices → Graphic industries, printing, publishing | 
| RFHA | Reusable Flight Hardware Authorization | In English | → Aeronautics, aircraft → Astronautics | 
| RHEC | Radiation-Hardened Emulating Computer | In English | |
| RISC | Reduced Instruction Set Computer | In English | |
| RISC | Reduced Instruction Set Computing | In English | |
| ROM | Read Only Memory | In English | → Memories | 
| ROS | Read-Only Storage | In English | → Memories | 
| RPU | Reconfigurable Processing Unit | In English | |
| RTC | Real-Time Computer | In English | |
| RTCC | Real-Time Computer Center | In English | |
| RTCC | Real-Time Computer Command | In English | |
| RTCC | Real-Time Computer Complex | In English | |
| RTCP | Real-Time Communications Processor | In English | → Telecommunications | 
| RTCS | Real-Time Computer System | In English | → Software | 
| RTL | Register Transfer Level | In English | |
| RWM | Read and Write Memory | In English | → Memories | 
| S3 | Amazon Simple Storage Service | In English | → Internet → Data | 
| SANDAC | Sandia Airborne Computer Guidance System | In English | → Aeronautics, aircraft | 
| SAR | Storage Address Register | In English | → Memories | 
| SCM | System Configuration Management | In English | |
| SCM | System Configuration Monitoring | In English | |
| SCM | System Control Module | In English | |
| SCSI | Small Computer System Interface | In English | → Peripheral devices | 
| SDC | Software Development Computer | In English | → Software | 
| SDP | Standard Data Processor | In English | |
| SDRAM | Synchronous Dynamic Random Access Memory | In English | → Memories | 
| SHAM | Sliced Hold-and-Modify | In English | → Graphical processing | 
| SHLB | Simulation Hardware Load Box | In English | → Computer simulation | 
| SHS | Simulation Hardware System | In English | → Computer simulation | 
| SLAHTS | Stowage List And Hardware Tracking System | In English | |
| SMCM | Small Module Core Memory | In English | → Memories | 
| SMEK | Summary Message Enable Keyboard | In English | |
| SMOC | Simulation Mission Operation Computer | In English | |
| SMSCC | Shuttle Mission Simulator Computer Complex | In English | → Astronautics | 
| SOC | Simulation Operation Computer | In English | → Computer simulation | 
| SOCH | Spacelab Orbiter Common Hardware | In English | → Astronautics | 
| SOPC | System On a Programmable Chip | In English | → Electronics | 
| SPA | Simple Power Analysis | In English | |
| SPA | Signal Processor Assembly | In English | → Electronics → Telecommunications | 
| SPOC | Shuttle Portable On-Board Computer | In English | → Astronautics | 
| SPOM | Self Programmable One-chip Microcomputer | In English | → Electronics → Telecommunications | 
| SPP | Serial Port Profile | In English | → Networks, communication | 
| SRAM | Static Random Access Memory | In English | → Memories | 
| SSC | Subsystem Computer | In English | |
| SSD | Solid State Drive | In English | |
| SSDSAS | Space Station Data System Architecture Study | In English | → Data → Astronautics |