| NOS | Network Operating System | In English | → Networks, communication |
| NSC | NASA Standard Computer | In English | → Spaceflight engineering, astronautics |
| NSP | Network Signal Processor | In English | → Networks, communication |
| NSP | Network Signal Processing | In English | → Networks, communication |
| NVM | Nonvolatile Memory | In English | → Memories |
| OBC | On-Board Computer | In English | |
| OCH | Orbiter Common Hardware | In English | → Spaceflight engineering, astronautics |
| ODDP | Object-Dependent Data Processor | In English | → Data |
| OLPC | One Laptop Per Child | In English | |
| ORAM | Output Random Access Memory | In English | → Memories |
| PBIC | Programmable Buffer Interface Card | In English | → Software |
| PC | Personal Computer = PK | Persoanlike kompjûter | In Frisian |
In English | |
| PCI | Peripheral Component Interconnect | In English | → Telecommunications |
| PCMCIA | Personal Computer Memory Card International Association | In English | → Associations → Memories |
| PDA | Personal Digital Assistant | In English | → Telecommunications |
| PERM | Programmgesteuerte Elektronische Rechenanlage | In German | |
| PET | Personal Electronic Transactor | In English | |
| PGSC | Payload and General-Support Computer | In English | |
| PICC | Payload Interface Control Computer | In English | → 0055 |
| PINCH | Payload Integration Nominal Cost Hardware | In English | |
| PK | Persona Komputilo | In Esperanto | |
| PK | Persoanlike kompjûter = PC (look above) |
In Frisian | |
| PLA | Programmable Logic Array | In English | → Electronics |
| PLD | Programmable Logic Device | In English | → Electronics |
| PLIMHR | Payload Integration Management Hardware Review | In English | → Management |
| PMHL | Preferred Measurement Hardware List | In English | |
| PROM | Programmable Read-Only Memory | In English | → Memories |
| PSP | PlayStation Portable | In English | → Entertainment |
| PUZ | Prozesatzeko Unitate Zentral | In Basque | |
| PWA | Private Write Area | In English | → Memories |
| RAID | Redundant Array of Independant Disks | In English | → Memories |
| RAID | Redundant Array of Independent Disks | In English | → Memories |
| 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 → Spaceflight engineering, astronautics |
| RHEC | Radiation-Hardened Emulating Computer | In English | |
| RISC | Reduced Instruction Set Computer | In English | |
| ROM | Read Only Memory | In English | → Memories |
| ROS | Read-Only Storage | In English | → Memories |
| RTC | Real-Time Computer | In English | |
| RTCC | Real-Time Computer Command | In English | |
| RTCC | Real-Time Computer Complex | In English | |
| RTCC | Real-Time Computer Center | In English | |
| RTCP | Real-Time Communications Processor | In English | → Telecommunications |
| RTCS | Real-Time Computer System | In English | → Software |
| RWM | Read and Write Memory | In English | → Memories |
| SANDAC | Sandia Airborne Computer Guidance System | In English | → Aeronautics, aircraft |
| SAR | Storage Address Register | In English | → Memories |
| SCM | System Configuration Monitoring | In English | |
| SCM | System Configuration Management | In English | |
| SCM | System Control Module | In English | |
| 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 |
| 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 | → Spaceflight engineering, astronautics |
| SOCH | Spacelab Orbiter Common Hardware | In English | → Spaceflight engineering, astronautics |
| SOPC | System On a Programmable Chip | In English | → Electronics |
| SPA | Signal Processor Assembly | In English | → Electronics → Telecommunications |
| SPA | Simple Power Analysis | In English | |
| SPOC | Shuttle Portable On-Board Computer | In English | → Spaceflight engineering, astronautics |
| SPOM | Self Programmable One-chip Microcomputer | In English | → Electronics → Telecommunications |
| SPP | Serial Port Profile | In English | |
| SRAM | Static Random Access Memory | In English | → Memories |
| SSC | Subsystem Computer | In English | |
| SSDSAS | Space Station Data System Architecture Study | In English | → Data → Spaceflight engineering, astronautics |
| SSH | Simulation Support Hardware | In English | → Computer simulation |
| SUMC | Space Ultrareliable Modular Computer | In English | → Spaceflight engineering, astronautics |
| SVCDS | Space Vehicle Computer Design System | In English | → Spaceflight engineering, astronautics |
| TCSC | Trainer Control and Simulation Computer | In English | |
| TDP | Tracking Data Processor | In English | → Data |
| TDSP | Time-Dependent Signal Processor | In English | |
| TNS | Total Network Solutions (www.tns.co.uk) | In English | → 6218 → Telecommunications |
| TPC | Telemetry Preprocessor Computer | In English | |
| TSCS | Test Support Computer System | In English | |
| UCC | Universal Checkout Console | In English | → Human-computer interaction |
| UPP | User Parameter Processor | In English | |
| VADC | Venting Analysis Digital Computer | In English | |
| VCP | Vehicle Control Processor | In English | → Vehicle engineering |
| VM | Virtual Memory | In English | → Memories → Software |
| VMS | Virtual Memory System | In English | → Memories → Software |
| WCC | Western Computing Center | In English | |
| WORM | Write Once Read Multiple times | In English | → Memories |
| WORM | Write Once Read Many | In English | → Memories |
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