Re: IRQ / ACK on PC Parallel Port

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#1127

From: Bob Masta
Date: Fri, 29 Mar 2002 13:45

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On Wed, 27 Mar 2002 21:35:17 GMT, "Werner Van den Eede"
<WernerVdE@Hotmail.com> wrote:

>Hi,
>
>Does anybody know if it is safe to connect the pin 10 (ACK) directly to the
>GND (pin 18-25) without the need of an extra resistor in between? Is there a
>possibility of damaging the parallel port of my PC?
>
>I would like an external optocoupler to trigger an ACK on my PC with ACK set
>to trigger the IRQ of the parallel port by pulling the ACK to GND.
>
>Many thanks for your help,
>
>Werner

Pin 10 (ACK) is an input.  Ground is a normal input signal
for this pin.  The only inputs you have to worry about are
those below ground or above 5 Volts.  

Bob Masta
tech(AT)daqarta(DOT)com
 
            D A Q A R T A
Data AcQuisition And Real-Time Analysis
 Shareware from Interstellar Research
          www.daqarta.com

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Subject: Re: IRQ / ACK on PC Parallel Port
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