22 Jan
2016
22 Jan
'16
5:06 p.m.
On 1/21/2016 10:48 PM, John Robertson wrote:
On 01/21/2016 6:46 PM, Charles Anthony wrote:
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?
thanks
Jim
<snip>
-- 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:
http://hackaday.com/2014/05/02/reading-paper-tapes-from-scratch/
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
transcribe.
John :-#)#