Pinouts of Connectors

Parallel (PC) connector pinout

layout
schematic diagram
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One of the most used printer interfaces, since every Intel/DOS/Windows based Personal Computer today has a Sub-D25 female connector which is called LPT1

25 pin D-SUB FEMALE connector pin-out & layout
25 pin D-SUB FEMALE connector  at the PC
Pin Name Dir Description
1 /STROBE --> Strobe
2 D0 --> Data Bit 0
3 D1 --> Data Bit 1
4 D2 --> Data Bit 2
5 D3 --> Data Bit 3
6 D4 --> Data Bit 4
7 D5 --> Data Bit 5
8 D6 --> Data Bit 6
9 D7 --> Data Bit 7
10 /ACK <-- Acknowledge
11 BUSY <-- Busy
12 PE <-- Paper End
13 SEL <-- Select
14 /AUTOFD --> Autofeed
15 /ERROR <-- Error
16 /INIT --> Initialize
17 /SELIN --> Select In
18 GND --- Signal Ground
19 GND --- Signal Ground
20 GND --- Signal Ground
21 GND --- Signal Ground
22 GND --- Signal Ground
23 GND --- Signal Ground
24 GND --- Signal Ground
25 GND --- Signal Ground

Note: Direction is Computer relative Device.

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Pinouts.ru > Pinouts and schemes of parallel ports connectors >  Pinout of Parallel (PC) connector and layout of 25 pin D-SUB FEMALE connector

Source(s): Hardware Book, Petr Krc
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