: Could somebody share a simple circuit that would interface with a PC's LPT1? The circuit should be capable of doing I/O with the PC. Thanks.<p>
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Hi!<p>
This is really easy...Get the pinouts of the <br>
parallel port...some site like:<br>
www.darkportal.com/cc <br>
as I remember...<br>
pin 1: Strobe (+5v) for running IC's<br>
Pin 2-9: 8 bits Output (+5v/0v) Set bits on address: port &Hx378<br>
next 8(7?) bits are input pins nomatter what any<br>
reference says...read these pins at port &hx379 <br>
and &hx37A<p>
you can output/input logic 1 or 0 on these pins<br>
do not apply more than 5+V on input it will fry your controller, believe me I've tried it, and<br>
do not apply motors directly on port.<br>
You don't need any electronic, you've got I/O here<p>
If you have any specific questions<br>
help your self an write me a note!!!<p>
Azid CaT <p>
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