This document provides a timeline for the history of CD-ROM technology from 1928 to 2008. It outlines several key events, including Harry Nyquist proposing the technology for audio CDs in 1928, the introduction of 7-inch 45 rpm records in 1949, Sony demonstrating the first optical digital audio disc in 1978, and CD manufacturing beginning on a large scale in 1982. The timeline also notes the release of the first album on CD in 1982, the creation of CD-R and DVD formats in the 1990s, and CD sales dropping in 2008 with the rise of mp3 downloads.

1. Computer Applications II
Computer Technology History of
CD-Rom
By GiaQuestani Glover 9th
Grade
Period 1
With Mr. Burns
Emery High School
Emeryville,CA

2. Time-line: Cd-Rom History
1928:Technology
used for today’s audio
CDs proposed and
proved in theory by
Harry Nyquist, a
Swedish physicist.
1949:7-inch 45
rpm records
introduced in the US
markets.
1978:Sony first publicly
demonstrated an optical
digital audio disc in
September 1978. With
150 minutes of playing
time
done

3. 1982:Manufacturing
of CD's began on a
large scale in a factory
with researchers at
Sony and Phillips.
1982: First ever
album on a CD
released by Sony
done
done

4. 1990: Phillips & Sony
created a recordable CD
called the CD-R
1997: DVD released
into the market,
sidelining CD's
Rewritable CD’s and
CD-RW were introduced
into the market as well.
Phillips launched
compact discs.
1999: Super audio CD
is released by Sony
and Phillips as a
higher quality digital
audio recording.

5. 2008:Sales for large label
CD's drops 20% due to
rising popularity of Mp3
radio.
2003:The 1st
consumer
available Blu-Ray Player is
released in Japan by Sony

6. Thank You For Viewing!
Cited Sources:
History of CD's
http://www.timetoast.com/timelines/history-of-cds
Development of the Compact Disc, CD-ROM,
DVD and Blu-Ray
http://www.voices.com/articles/audio-recording-
technology/cd-history-timeline
Image(s) ORIGINS:
zazzle.com
45 RPM Record Post Card
512 × 512 - 34k - jpg
hometheater.com
first portable CD
player,
600 × 485 - 53k - jpg
newscenter.philips.com
Philips celebrates 25th
1824 × 1212 - 136k - jpg
en.wikipedia.org
File:Billy Joel 52nd Street
300 × 300 - 128k - jpg