Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!amdahl!oliveb!cygnet!mark
From: mark@cygnet.CYGNETSYSTEMS (Mark Quattrocchi)
Newsgroups: comp.ivideodisc
Subject: Re: CD (roms) question
Message-ID: <689@cygnet.CYGNETSYSTEMS>
Date: 14 Jan 88 21:38:58 GMT
References: <7813@eddie.MIT.EDU> <10820001@hpsal2.HP.COM>
Reply-To: mark@cygnet.UUCP (Mark Quattrocchi)
Organization: Cygnet Systems -- Sunnyvale, CA
Lines: 17

In article <10820001@hpsal2.HP.COM> hull@hpsal2.HP.COM (James Hull) writes:
>> What exactly is the capacity of a standard size CD, both in bytes and
>> in playing time for music (assuming a standard speed)?
>>				Nathan Glasser
>
>A CD can hold approximately 75 minutes of music (on one side).
>
>HP has a CD-ROM product which claims to hold "over 550 megabytes" on a
>"three-mile long spiral track with a density of 16,000 tracks per inch".
>The pictures in the brochure definitely show labeling on one side of the disc,
>so I assume that only one side is being used for data.
>
> -- Jim Hull
>    hplabs!hpda!hull

Both CD-ROM and WORM drives can hold between 500-750 meg depending on the
manufacturer. It is expected within a year both will be able to hold 1 gig
(double sided of course).