Restoring Old Paper Tape
jws at jwsss.com
Fri Jan 22 11:06:00 CST 2016
On 1/21/2016 10:48 PM, John Robertson wrote:
> On 01/21/2016 6:46 PM, Charles Anthony wrote:
>> -- Charles
> Would it not be simpler to make an optical reader to handle this job?
> You need a light source and the correct number of opto transistors to
> read the light from each hole. There is an index built into the tape
> so that is easy to set.
> Something like this:
Did anyone get a schematic on the values the fellow used in the article
on vintage-computer.com? I see the photos, but didn't see any schematic
showing what the actual circuit he found to work was. Also didn't see
any real names. Was the cited article anyone here?
> Of course my assumption above is based on tape that is still complete.
> If it has holes or can't be pulled then, yes, photographing and
> visually reading the dot patterns may be necessary, but that sounds
> rather impractical if there are more than a couple of tapes to
> John :-#)#
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