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<b>Shirley Ann Jackson</b><br> Born: 1946<br> Key invention: Touch-tone telephone<br><br> Shirley Ann Jackson was one of the first Black students to attend MIT and earned her Ph.D. degree in nuclear physics in 1973 while being one of only two women in her undergraduate class.<br><br> Jackson is most known for her research that led to inventions including the portable fax machine, the touch-tone telephone, solar cells, fibre optic cables, caller ID, and call waiting.<br><br> (World Economic Forum)

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