| Acronym | Meaning |
| VAX | Virtual Address Extension |
| PIM | Personal Information Manager |
| VTAM | Virtual Telecommunications Access Method |
| MFM | Modified Frequency Modulation |
| CDDI | Copper Data Distribution Interface |
| MAE | Metropolitan Area Exchange (Ethernet) |
| SOAP | Simple Object Access Protocol |
| SPID | Service Profile (Provider) Identification |
| PIF | Program Information File |
| DXF | Data Exchange File (Format) |