Re: IRQ / ACK on PC Parallel Port

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From: JJ
Date: Thu, 28 Mar 2002 14:56

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Sylvan Butler <Znospam+noZs_0203@hpb13799Z.Zboi.hpZ.com.invalid> wrote in message news:<slrnaa4krb.3mm.Znospam+noZs_0203@hpb13799Z.Zboi.hpZ.com.invalid>...
> On Wed, 27 Mar 2002 21:35:17 GMT, Werner Van den Eede <WernerVdE@Hotmail.com> wrote:
> > 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?
> 
> Usually that will be fine.  There is always a possiblity of damage.
> In this case I think it is remote.
> 
> sdb

The best thing to do is to buy an "old" parallel port. But if that
sn't possible than you must be carefull. The ACK line is normally
spoken "high", but I think when you put it to the ground it's okay.
Because when you read from the ACK-line it can be "high" or "low".
E.g. the printer can set it "low". So in my opinion you can put it to
ground safely.

Greetz,
JJ

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From: jjkrikken@hotmail.com (JJ)
Newsgroups: be.science.electronics,sci.electronics.basics,sci.electronics.design,sci.electronics.equipment,sci.electronics.misc
Subject: Re: IRQ / ACK on PC Parallel Port
Date: 28 Mar 2002 06:56:53 -0800
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