Designed and developed electronic filters
Invented mathematical bioeconomics
Greatest classical geometer of the 20th century
Established the Fields medal, the "Nobel Prize" of mathematics.
Created the Java programming language
Invented the APL computer programming language
Wrote "The C Programming Language" with Dennis Ritchie.
Developed mathematical theories of group representations and number theory
Developed early theories of computer vision and artificial intelligence
Research on computer vision
Discoverer of Tutte’s Theorem