History on cd's

Edison accidentally discovered that he had recorded sounds that resembled a human voice.

Nov 2, 1877

dates

Period: Nov 2, 1877 to Nov 2, 2050

Emil Berliner inveted the gramophone

Nov 8, 1887

The first electrical recording issued to the public

Nov 11, 1920

RCA Victor introduced an early version of a long-playing record for home use in September 1931

Sep 3, 1931

sony introduced a 30cm record playing time 150 minutes

Nov 2, 1977

In 1979, Phillips and Sony started off a joint working group in order to design a successful digital audio disc

Nov 3, 1979

When the cd was inveted

Nov 3, 1982

A cd that could fit in you pocket

Nov 2, 2050

Citations

Nov 5, 2055

Works Cited
Brain, Marshall. Http://www.google.com/imgres?q=pictures+of+old+cds&num=10&hl=en&safe=active&client=safari&rls=en&biw=1024&bih=964&tbm=isch. © 1998-2012. Photograph. N.p.
Http://www.xm2rss.com/the-duplication-and-utilization-of-mini-cds. 01 10th, 2011. Photograph. N.p.
"Philips Research." - History of the CD. N.p., n.d. Web. 29 Oct. 2012. http://www.research.philips.com/technologies/projects/cd/index.html.
"Welcome!" The CD Information Center. N.p., 25 Oct. 2012. Web. 30 Oct. 2