Facit 4070 to PC interface

dwight dkelvey at hotmail.com
Wed May 4 19:59:28 CDT 2016

Most punches with a parallel input can be cross
wired to a parallel port.
If the strobe is upside down, you can use one of the other signals.
Many punches have a jumper for the strobe polarity.

From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Charles Dickman <chd at chdickman.com>
Sent: Wednesday, May 4, 2016 5:52:29 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Facit 4070 to PC interface

Has anyone ever worked up a PC parallel port to Facit 4070 paper tape
punch interface?

I found one on a Swedish website. The punch parallel input looks like
it is TTL compatible, but I can't find anything in the documentation
that describes the input voltage specifications.


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