born Dec. 3, 1924, Philadelphia, Pa., U.S.
U.S. mathematician.
He received his bachelor's and master's degrees from Columbia University. He was head of a small group that in 1957 developed the computer language FORTRAN for numerical analysis. He contributed to the development of ALGOL and developed a notation known as the Backus Normal, or Backus-Naur, Form for defining the syntax of a programmable language (1959). He received the Turing Award in 1977.