Re: Tape, was Single User
- Reply: Steve O'Hara-Smith : "Re: Tape, was Single User"
- In reply to: Matthias Apitz : "Re: Single User"
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Date: Thu, 19 May 2022 20:49:51 UTC
According to Matthias Apitz <guru@unixarea.de>: >El día jueves, mayo 19, 2022 a las 01:43:09p. m. -0400, Valeri Galtsev escribió: > >> I've seen these paper punch tapes too. Don't have them in my museum, just 80 >> column punch cards. and 1/2 inch bobbin of tape. No bobbin tape drive >> though... > >I own such a tape too from my work in the Computer Center of the >University Karl Marx in Leipzig, see here: > >http://www.unixarea.de/simage20170404_071712335.jpg The thing in the picture isn't paper tape, it's a 1/2" magnetic tape. It looks relatively new, 1970s rather than 1950s so it is likely recorded 9 bits across (8 plus parity) at a density of 1600 or 6250 BPI. Here's some 8 bit paper tape: https://commons.wikimedia.org/wiki/File:Punched_paper_tape_roll.jpg -- Regards, John Levine, johnl@taugh.com, Primary Perpetrator of "The Internet for Dummies", Please consider the environment before reading this e-mail. https://jl.ly