8 May
2016
8 May
'16
10:21 a.m.
Thanks for the link! I didn't know about it. Looks like a pretty straightforward
trick, very helpful.
Marc
On May 4, 2016, at 8:32 PM, Bob Rosenbloom <bobalan
at sbcglobal.net> wrote:
On 5/4/2016 5:52 PM, Charles Dickman wrote:
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.
Chuck
Check this link out:
http://www.chiark.greenend.org.uk/~pmaydell/misc/cardpunch/dongle.htm
It shows how to build a PC to 4070 interface. Basically inverting a few signals.
Bob