Awesome Inventions by African Americans

Who invented microphones, PCs, and video game consoles? In honor of Black History Month, Hank talks about some African Americans scientist/inventors who've helped make all our lives more awesome.

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Sources:
http://www.usnews.com/usnews/culture/articles/000103/archive_034033.htm
http://www.math.buffalo.edu/mad/computer-science/dean_mark.html
http://www.invent.org/hall_of_fame/38.html
http://www.black-inventor.com/Dr-Mark-Dean.asp
http://www.jhu.edu/jhumag/0903web/west.html
http://www.nytimes.com/2011/04/14/technology/personaltech/14lawson.html?_r=1
http://en.wikipedia.org/wiki/Jerry_Lawson_(engineer)
Images:
http://en.wikipedia.org/wiki/File:James_West.JPG
http://domino.watson.ibm.com/comm/research_people.nsf/pages/dean.index.html
http://en.wikipedia.org/wiki/File:Fairchild-Channel-F.png

Видео Awesome Inventions by African Americans канала SciShow