1683 Fortran Text (Structured) Fortran (formerly FORTRAN, derived from "Formula Translation") is a programming language suited to numeric and scientific computing. Fortran was originally developed by IBM in the 1950s for use in the scientific and engineering sectors. 1 Digital Preservation Department / The National Archives 18 May 2016 18 May 2016 fmt/879 PUID f90 File extension f95 File extension f03 File extension f File extension for File extension