Wanted, Papertape Reader for Archiving Tapes

David Collins davidkcollins2 at gmail.com
Tue Apr 28 16:34:10 CDT 2020

Further to Dave’s post below, I’m happy to share the Arduino code and schematic if anyone has a suitable reader and wants to try it. It was indeed designed to interface to the HP2748 but is pretty simple and could be adapted to any similar reader. 

David Collins

Sent from my iPad

> On 29 Apr 2020, at 6:33 am, J. David Bryan via cctech <cctech at classiccmp.org> wrote:
> On Tuesday, April 28, 2020 at 17:56, Tony Duell via cctech wrote:
>> The HP2748 is a common-ish example of this type of un[i]t. 
> David Collins of the HP Computer Museum and I just recently completed 
> reading some 200+ paper tapes from the museum collection.  He used a 2748 
> coupled with a custom Arduino-based interface to produce plain-text files 
> containing an octal representation of the tape bytes.  We passed these 
> through a small program to convert them to binary files and a second 
> program to verify checksums of those tapes containing relocatable or 
> absolute binary object data.  The resulting files can be used as is with 
> the HP 2100 SIMH simulator or could be punched back into physical paper 
> tapes if desired.
>                                      -- Dave

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