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From: acm@Sun.COM (Andrew MacRae)
Newsgroups: alt.msdos.programmer,comp.os.msdos.programmer
Subject: Re: Programming the printer port to read in data.
Message-ID: <4144@jethro.Corp.Sun.COM>
Date: 21 May 91 20:55:05 GMT
References: <1991May21.202043.24725@magnus.acs.ohio-state.edu>
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In article <1991May21.202043.24725@magnus.acs.ohio-state.edu>, slahiri@magnus.acs.ohio-state.edu (Santanu Lahiri) writes:
> Hi folks,
> 
> I am trying to write a program that can read a switch status - 
> switch is open or closed.  The switch is an ordinary switch that I hope
> to hook up to the printer port and use data line D0 and the Gnd line to
> detect closure.

 [text deleted]

> I'd appreciate any pointers you can give, or even alternate methods,
> perhaps using the RS-232 ports.  Any suggestion is welcome, as long as
> hardware requirements are minimal.  

No doubt twenty-five others will respond with the same suggestion, but have
you considered using the game port?  There are lines there that indicate a
button has been pressed.  In fact you could use a modified joystick as your
device and save a little trouble building one.

						Andrew MacRae