| 1. | .pc | Text file containing IBM PC specific info |
| 2. | .pc1 | Bitmap graphics (Atari Degas Image) |
| 3. | .pc2 | Bitmap graphics (Atari Degas Image) |
| 4. | .pc3 | Bitmap graphics (Atari Degas Image) ◊ Custom palette (Harvard Graphics 3.0) |
| 5. | .pc8 | Ascii text IBM8 character set (NewWave Write) |
| 6. | .pcb | P-CAD database (P-CAD) ◊ Printed Circuit Board (PADS) ◊ Printed Circuit Board file (ACCEL, Protel) ◊ Project (PrintShop) ◊ Settings (Microsoft PowerPoint) |
| 7. | .pcc | Cutout picture vector graphics (ZSoft PC Paintbrush) |
| 8. | .pcd | Bitmap graphics - Kodak Photo-CD format (multi-resolution) ◊ P-Code compiled test scripts (Microsoft Visual Test) |
| 9. | .pcds | Bitmap graphics - Kodak Photo-CD format (multi-resolution) |
| 10. | .pce | Mapping mailbox names to DOS filenames (Eudora) |