Re: [ARSCLIST] Preservation media WAS: Cataloguing still :-)

[Lou Judson <loujudson@xxxxxxx>]

1983: CDs (compact discs, not certificates of deposit) go on sale.
from <http://www.mediahistory.umn.edu/time/1980s.html>
and see <http://www.oneoffcd.com/info/historycd.cfm>

and google for more.

In junior high I did a long report on how records were made - the 
technology and the history. I try to keep up still. There are lots of 
stories, such as the president of Sony wanted CDs to be big enough for 
the longest piece of music - Beethoven's Ninth - which is how they got 
to be 74 minutes at first. I never understood why thay didn't make them 
as long as cassette tapes, 90 minutes, which would have made so much 
more sense!

<L>

Lou Judson • Intuitive Audio
415-883-2689

On Sep 5, 2006, at 1:08 PM, Roger and Allison Kulp wrote:

> Japan.Sony inroduced them,like 1981 or so.
> Roger Kulp
>
> steven c <stevenc@xxxxxxxxxxxxxx> wrote: ----- Original Message -----
> From: "Don Cox"
> > How did engineers make the first CDs, when hard drives were not big
> > enough to hold 600 Megs of data?
> Actually, I'm not sure...but one way it COULD have been done is with
> magnetic tape storage, since that was used on mainframe computers at
> least in the early seventies, if not before. When I was working my
> way through university as a security guard for State Farm ('74-'76)
> I recall seeing carts loaded with HUGE reels of data tape...and I
> have no idea what the length v. data capacity algorithm might have
> been (or how many reels of tape, if more than one, would be needed
> to store the digital capacity of a CD...?)
>
> In fact, where WERE CD's introduced commercially?
>
> Steven C. Barr
>
>
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