Originally posted by OwlHoot
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Reply to: Old punched tape up to date
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Previously on "Old punched tape up to date"
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Originally posted by malvolio View PostModern youth, eh...
Time was I could read paper tape (and 80-column punch cards) directly, and manually correct them come to that. The trick was to remember that the 4/3 coding ignored the smaller registration holes which actually split the 4 set, not separated the two sets.
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Nice
The PDP8/e at school had a high-speed optical punched tape reader, where IIRC "high-speed" meant 300 characters per second, as opposed to the 10 of the Teletype
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Modern youth, eh...
Time was I could read paper tape (and 80-column punch cards) directly, and manually correct them come to that. The trick was to remember that the 4/3 coding ignored the smaller registration holes which actually split the 4 set, not separated the two sets.
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Old punched tape up to date
For all those oldsters!
Reading Paper Tapes From Scratch!
Feeling a little nostalgic? Dying to read some paper ticker tapes? You can do it manually, but that’d take forever! [NeXT] decided to make a little PCB to help him out.
Having searched for paper tape readers for years, and even getting halfway through building the mechanical portion of it in his high-school tech class, [NeXT] decided to take a serious stab at it — and by golly, it works!
The reason he finally decided to go down this route is because you just can’t buy them (well, for cheap), and even the DIY or hobby ones out there are notoriously slow — what better reason to design it from scratch?Tags: None
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