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Old 07-08-2015, 09:07 PM   #1
Undertoad
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I think high-quality wire recorders were developed in Germany in order to record Hitler's speeches.

Interesting: recording tape, cassette, 8-track, reel-to-reel is just oxides of that same metal of that recording wire, magnetized and read by a head. It's just applied in a thin layer onto a long plastic tape and magnetized and read by a head.

AND videotape is just oxides of that same metal, applied to a thicker plastic tape and magnetized and read by a head.

AND floppy discs are just oxides of that same metal, applied to a plastic disk and magnetized and read by a head.

AND hard drives are just oxides of that same metal, applied to a firm, spinning disk and magnetized and read by a head.

Only when we got to optical disk was it no longer a magnetized surface read by a head. Then, it became pits in metal, read by a laser.

And that's where the story ends, because in the future, everything digital will be kept in solid state memory.
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Old 07-11-2015, 03:01 PM   #2
tw
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Quote:
Originally Posted by Undertoad View Post
And that's where the story ends, because in the future, everything digital will be kept in solid state memory.
The story never ends. You are making the mistake today that was made back 40 years ago. Remember early Star Trek? They too thought the future was magnetic tapes.

We know optical is today where magnetics probably were in the 1960s. So what is about to make optical devices obsolete? Numerous technologies exist including and not limited to phase change materials and quantum dots. All based in sub-atomic structures. Semiconductor memory is layers of atomic structures. Too obsolete.
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