If memory serves, Windows 95 required 25 of them. Back in the day that meant you had to just sit in front of your computer all day feeding floppy disks into that bad boy.

I remember something to that amount as well, or something between that and 35. Anyway, your one before last floppy was ALWAYS corrupted, and those things weren't fast, mind you.

I think if there's one field apart from transistor capacity where we've really advanced eons in it's exchangeable storage.

I had a feeling we've surpassed Moore's law, and the numbers tell an amazing story:

In 1971 IBM released the first floppy disk which was 8" in diameter (surface area of approx. 32429 mm

^{2}) and contained 80KB of storage.

That's 0.002466...KB per mm

^{2}.

Moore's law says it should double every 24 months (the less harsh '18 months' time period was later factored by David House, one of Moore's colleagues), so that means that in 45 years, it should have doubled 22.5 times. Meaning it should now be around 0.002 * 2

^{22.5} kb/mm

^{2} which is 14632.9 kb/mm

^{2} - which is approx. 14 MBs per mm

^{2}!

This means the best microSD could only contain about 2240MBs, which is approx. 2GB.

The highest capacity of a commercially available microSD card is 128GB. A microSD card is approx. 165mm

^{2}. That would be 775758kb per mm

^{2}, which is 775.8MB per mm

^{2} which is 55 times more than the harshest approximation according to Moore's Law.

Had the storage advancements been in accordance to Moore's law, we would only get to that in the year 2046!

Note that all these calculations only takes into account removable self-sustained storage, meaning it did not take into account detachable storage such as external hard-drives, although my back-of-the-envelope calculations actually seem to say that microSD cards are far more efficient than SSDs: The highest capacity SSD available commercially 'only' holds 4TB in a box of 100mm x 10mm x 70mm = 70000mm

^{3}, which would hold (assuming the height of 1 microSD card is 1 mm) 4375 microSD cards which at 128GB each would be 560TB, which means the best SSD in the market is 140 times LESS effective than a microSD card!

Of course none of that takes into account things like consumer price and speed, mostly because I couldn't find data about those things going back far enough, but I have a feeling we made huge advancements in those areas as well ;-)