36 Pin Centronics Parallel Connector
| Pin 1 | -Strobe |
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| Pin 2 | Data 1 |
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| Pin 3 | Data 2 |
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| Pin 4 | Data 3 |
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| Pin 5 | Data 4 |
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| Pin 6 | Data 5 |
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| Pin 7 | Data 6 |
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| Pin 8 | Data 7 |
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| Pin 9 | Data 8 |
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| Pin 10 | -Acknowledge |
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| Pin 11 | Busy |
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| Pin 12 | Paper End |
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| Pin 13 | Select |
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| Pin 14 | -Auto Feed |
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| Pin 15 | Unused |
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| Pin 16 | Logical Ground |
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| Pin 17 | Chassis Ground |
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| Pin 18 | Unused |
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| Pin 19 | Ground Return for -Strobe |
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| Pin 20 | Ground Return For Data 1 |
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| Pin 21 | Ground Return For Data 2 |
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| Pin 22 | Ground Return For Data 3 |
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| Pin 23 | Ground Return For Data 4 |
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| Pin 24 | Ground Return For Data 5 |
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| Pin 25 | Ground Return For Data 6 |
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| Pin 26 | Ground Return For Data 7 |
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| Pin 27 | Ground Return For Data 8 |
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| Pin 28 | Ground Return For -Acknowledge |
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| Pin 29 | Ground Return For Busy |
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| Pin 30 | Ground |
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| Pin 31 | -Printer Init |
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| Pin 32 | Error |
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| Pin 33 | Ground |
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| Pin 34 | Unused |
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| Pin 35 | Pulled Up To +5V DC Through 4.7Kohm Resistor |
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| Pin 36 | Select In |
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