| Acronym | Meaning |
| HD | High Density |
| NCSA | National Center For Supercomputing Applications |
| SMDS | Switched Multimegabit Data Services |
| LMB | Left Mouse Button |
| GMT | Greenwich Mean Time |
| DSVD | Digital Simultaneous Voice And Data |
| HDLC | High-level Data Link Control |
| UUCP | UNIX-to-UNIX Copy |
| ESDI | Enhanced System Device Interface |
| MMX | Matrix Math Extensions (Multimedia Extensions) |