Paper tape standard

-----Original Message----- From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Mark Wickens Sent: 16 January 2015 20:13 To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: Paper tape standard 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 p850ug1.demon.co.uk> 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 >