| Abbreviation | Definition |
|---|---|
| PDET | Portable Data Entry Terminal |
| PDG | Power Done Gone |
| PDP | Peripheral Data Processor |
| PDP | Physical to Digital to Physical |
| PDP | Plasma Display Panel |
| PDP | Programmable Data Processor |
| PDS | Processor Direct Slot |
| PDT | Page De-allocation Table |
| PDT | Portable Data Terminal |
| PDU | Personal Data Unit |
| PDU | Power Distribution Unit |
| PDU | Programmable Delay Unit |
| PE | Photo Eye |
| PE | Processing Element |
| PE | Processor Element |
| PECDS | Personal Electronics Computer Display System |
| PECR | Program/Erase Control Register |
| PEL | Picture ELement |
| PEL | Picture ELement (a PIXEL) |
| PEM | Proton Exchange Membrane |