QRTape | Audio Playback from Paper Tape with Computer Vision

Here is a project that I have been tossing around in my head for at least a year or two now. Given advances in audio compression algorithms ...

Here is what my tiny BASIC interpreter would write to a five-channel paper tape. There are no characters like < = > or even + or * in the CCITT-2 encoding, so they are replaced with two-character keywords or alternative characters. For example, + is & and * is !. When reading back baudot-encoded programs, these keywords and characters are translated back to their original form.
#retrocomputing #papertape #BASIC #baudot
The latest prototype of my tiny BASIC interpreter can save programs in CCITT-2 encoding, so it can in theory write programs to 5-channel paper tape. I have a paper tape punch, but it has an RS530 interface, so I need a converter to RS232, which seems to be hard to come by these days. I bought a used one that is supposed to be in "good working condition", but comes without any documentation. Why am I even doing this? :)
#retrocomputing #papertape #baudot #BASIC

@sirber

Yeah, but I think they were mainly used to load software. Think of them as early CD-ROM.
MS BASIC was originally distributed on paper tape. Probably because tape readers are electronically pretty simple machines vs. tape players or especially floppies. They were also (I think??) more standardized than audio tape formats.

The concrete example I know of (again IIRC) was the PDP-11. When it started cold, it was a brick; all it could do is load in bytes from the toggle switches. So you'd code in the tape loader program from memory (i.e. your brain) with the toggles, and then you could load other utilities from paper tape to be able to read mag tapes or whatever else.

#PDP11 #PaperTape

Reading a paper tape at about 300 cps.

PeerTube

Reading a paper tape at about 300 cps.

https://toobnix.org/w/pXpABkRrHnaJZ8tEz1aqjk

Reading a paper tape at about 300 cps.

PeerTube

Guys, guess what time it is!?!

#retrocomputing #PaperTape #PDP11 #ComputerHistory

Managed to watch the latest Usagi Electric video tonight. Just fantastic!

I have never seen a paper tape puncher in action before, and wow, just wow 😲 That thing was insane. Also, I had never really appreciated that there was 5 level and 8 level tapes. In hindsight it makes sense, I just never thought about it 🤔

Well worth a watch!

#UsagiElectric
#PaperTape
#retrocomputing

https://youtu.be/jBaMJcATHHY?si=ZrH_wkgsFrCEH81-

Reviving a Facit 4070 Paper Tape Punch

YouTube

Just arrived from Texas - Papertape!

The rolls are complete and undamaged, but unfortunately I don't know what they were used for or what is stored on them.
Nevertheless it's a certain satisfaction to see the individual bits.

"eBay International Shipping" is a rabbithole 🤠 🙂‍↕️

#retrocomputing #papertape

Usagi Electric’s Paper Tape Reader Is Ready To Hop With The Tube Computer

After previously working out a suitable approach to create a period-correct paper tape reader for his tube-based, MC14500B processor-inspired computer, [David Lovett] over at the Usagi Electric far…

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