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8

It was introduced for the same reason 2.88 MB 3.25" floppy diskettes and drives were introduced. Remember ED and how it took over from HD the way HD did from DD? No, you don't, because it never did take over, or even become popular. But they were an easily available standard (not proprietary) that continued a twenty year history of developing denser and ...


6

What was the use case for the 96-column punch cards introduced with the IBM System/3? About the same as for introduction of 5.25 or later 3.5 inch floppies: same capacity in a smaller form factor. In fact, the 96 column card was kind of the 3.5 of punch cards, just right to be put in a shirt pocket. So ... why did IBM invent them, To give more storage in ...


11

The whole claim seems a bit dubious. I did spend a few hours now, not only searching the net, but as well peeking into all secondary literature I have regarding ICL (or parts thereof) and IBM, but couldn't find any remark even remotely supporting the claim. Over all it seems like an easy to make, hard to prove statement, especially as all, as mentioned, is ...


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