Amos E. Joel

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Amos Edward Joel Junior (born March 12, 1918 in Philadelphia , † October 25, 2008 in Maplewood , New Jersey ) was an American electrical engineer.

Joel built his first telephone networks as a teenager . He went to school in the Bronx and studied electrical engineering at the Massachusetts Institute of Technology with a bachelor's degree in 1940 and a master's degree in 1942. He worked there on the analog computer (differential analyzer) of Vannevar Bush and received his doctorate under Samuel H. Caldwell. From 1940 until his retirement in 1983 he was with Bell Laboratories . First he worked with Claude Shannonon cryptographic studies and machines during World War II. In the 1960s, he led the development of electronic switching systems for telephone networks at Bell Labs. This led to the development of the Number One Electronic Switching System (1ESS), introduced in 1965, and the Traffic Service Position System (TSPS), introduced in 1969.

He was also a pioneer of the cell phone : a patent from him in 1972 made it possible to use the phone without interruption when changing the radio cell.

In 1976 he received the IEEE Alexander Graham Bell Medal , in 1992 the IEEE Medal of Honor and in 1989 the Kyoto Prize . He was a Fellow of the National Academy of Engineering (1981), the American Academy of Arts and Sciences (1993) and the IEEE. In 1993 he received the National Medal of Technology and in 1981 the Stuart Ballantine Medal of the Franklin Institute.

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