24 May
2012
24 May
'12
5:52 p.m.
cctalk-request at classiccmp.org wrote:
Message: 1
Date: Thu, 24 May 2012 11:20:55 +0200 (CEST)
From: Christian Corti <cc at informatik.uni-stuttgart.de>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Subject: Re: Software for OCR'ing paper tape?
Message-ID: <alpine.DEB.2.02.1205241119530.20068 at linuxserv.home>
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
On Wed, 23 May 2012, Jonas Otter wrote:
This was done YEARS ago, in the very earliest microcomputer days.
Jon
Am I completely wrong if I think I remember that
the sprocket holes have a
fixed relationship to the data holes? If so, it ought to be possible to build
an optical decoder, illuminate it with a simple light bulb, connect it to an
input-capable parallel port on a computer with suitable software, and simply
pull the tape through by hand? The sprocket holes would function as a clock
for the data.
Now guess how a classic photoreader (optical paper tape reader) works...