Quote:
Originally Posted by Quoth
All computer files are digital information, even if stored in analogue fashion like old cassette tapes on home computers.
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Not entirely correct: analogue data needs to be
converted to become digital information which a computer might understand.
In the old days, people used cassettes tapes to store (file away) computer information in some analogue format (wave-forms). You could play them unconverted on your cassette-deck (remember the awful noise?). So you had to use some special input connector which some circuitry to convert those analogue signals back into something your computer did understand (make it digital again).
Later (Sony for one) special digital audio (storage) tapes (DAT) were developed which stored analogue signals really digitally in 16 bits magnetic on the tapes.