| Abbreviation | Definition |
|---|---|
| PCB | Program Control Block |
| PC-DOS | IBM's Personal Computer Disc Operating System |
| PCE | Portable Computer Enhancement |
| PCF | Prograph Control Flag |
| PCGE | Pacific Coast General Engineering |
| PCGE | Plan Contable General Empresarial |
| PCH | Pre Compiled Header |
| PCI | Program Controlled Interruption |
| PCIL | Private Core Image Library |
| PCIS | Person Centered Information System |
| PCIS | Portable Common Interface Set |
| PCL | Personal Control Lock |
| PCL | Printer Command Language |
| PCL | Printer Control Language |
| PCM | Parallel Cache Management |
| PCM | Performance Computer Modulator |
| PCM | Plug Compatible Manufacturers |
| PCM | Process Control Manual |
| PCN | Personal Communication Network |
| PCO | Pre-defined Composition Object |