Centronics 36-pin connector is the original parallel printer port interface on printers from the 1970s through 2000s. The DB25 on the PC side connects via a parallel printer cable to the 36-pin Centronics on the printer.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | /STROBE | Data strobe active low | I/O |
| 2 | D0 | Data bit 0 | I/O |
| 3 | D1 | Data bit 1 | I/O |
| 4 | D2 | Data bit 2 | I/O |
| 5 | D3 | Data bit 3 | I/O |
| 6 | D4 | Data bit 4 | I/O |
| 7 | D5 | Data bit 5 | I/O |
| 8 | D6 | Data bit 6 | I/O |
| 9 | D7 | Data bit 7 | I/O |
| 10 | /ACK | Acknowledge active low | I/O |
| 11 | BUSY | Printer busy | I/O |
| 12 | PE | Paper empty | I/O |
| 13 | SELECT | Printer selected | I/O |
| 14 | /AUTO_FEED | Auto line feed | I/O |
| 15 | /ERROR | Printer error | I/O |
| 16 | /INIT | Initialize printer | I/O |
| 17 | /SELECT_IN | Select input | I/O |
| 18-35 | GND | Ground wires | GND |
| 36 | /SELECT_IN | Select input | I/O |
Centronics 36-pin connector is the original parallel printer port interface on printers from the 1970s through 2000s. The DB25 on the PC side connects via a parallel printer cable to the 36-pin Centronics on the printer.