Details

Perfect for prototyping parallel port circuits.

Features

• On board DB25 Female connector
• Screw terminal for each data line
• Screw terminals accomodate wire sizes from 16AWG to 26AWG
• PCB dimensions: 31 mm x 93 mm

Parallel Port Hardware

The diagram below shows the pinout of the parallel port connector, when looking at the computer's connector.



The parallel port uses three registers, their bit assignment is shown in the diagram below.

Descriptions of the different bits are listed in the table below.

Pin Reg Bit Description Direction 1 /C0 Strobe Output 2 D0 Data Bit 0 Output 3 D1 Data Bit 1 Output 4 D2 Data Bit 2 Output 5 D3 Data Bit 3 Output 6 D4 Data Bit 4 Output 7 D5 Data Bit 5 Output 8 D6 Data Bit 6 Output 9 D7 Data Bit 7 Output 10 S6 Acknowledge Input 11 /S7 Busy Input 12 S5 Paper End Input 13 S4 Select In Input

Pin Reg Bit Description Direction 14 /C1 Auto Feed Output 15 S3 Error Intput 16 C2 Initialise Output 17 /C3 Select Output 18 - Ground - 19 - Ground - 20 - Ground - 21 - Ground - 22 - Ground - 23 - Ground - 24 - Ground - 25 - Ground -