Paper tape standard

Mark Wickens mark at
Fri Jan 16 14:13:02 CST 2015

I had a dream of creating a paper tape with a program I wrote on it for the
Pegasus computer at the Science Museum. If they ever turn it on again, or
another one crops up, I might not have any excuses left...

On 16 January 2015 at 20:09, tony duell <ard at> wrote:

> >     OBA! I'm crazy for creating a paper reader/perfurator! :D This is an
> old
> > dream of mine, although I have no specific computers who use it, nor any
> > specimen of perfored tape around. But I find it to be just beautiful :)
> The reader is relatively easy to make at home, at least if you are happy
> with a
> photoelectric one. If you trigger off the feed holes, you don't need a
> sprocket
> drive, a capstan and pnch roller is fine. This is the sort of thing you
> can make
> in a good home workshop.
> The punch is a lot harder. Making the punch pins and die block, and then
> correctly grinding and hardening the former is not going to be easy.
> Mechanically the rest may not look too hard (the Facit 4070 used a set
> of rotary solenoids and linkages, one per pin), but it is still a major
> project.
> -tony

More information about the cctalk mailing list