On Fri, 2007-02-23 at 12:19 -0800, Hex Star wrote:
Do those mass manufactured cds last longer then cd-rs?
How long do those
last? Why can't we create cds like those? (How do they do it?)
Yes, they last MUCH longer. If they started with gold foil, a
lifetime of many centuries would not be out of the question.
The problem is the massive expense of setting up the press to make
them. Once it is set up, pressing a million is not much money. But, if
the setup is for ONE of them.... Hoo, boy. I don't have a price -- I
just know *I* can't afford it.
Now, it might well be possible to set up a DVD (written on a
home-type machine) that had *ALL* the known software of a class, or
several classes, of machinery on it... Such as a CP/M DVD, a VMS DVD,
etc. LOTS of software fits in 8 gigabytes... Probably, there could be
a mix -- One DVD that is all known TRS-DOS and CP/M software, or
whatever. But, it would take quite a few buyers to bring the price down
to reasonable levels. It's the same situation as the one that annoyed a
friend of mine. We were discussing personal computing, and the subject
of when it started came up. Finally, he said, "Hey, there was personal
computing in the 1950s, as long as your family name was Rockefeller."
Back when itsy-bitsy personal computers cost as much as a new car, not
many people could be that personal with them...
Warren E. Wolfe
wizard at voyager.net