An early version of Fortran designed by John Backus at IBM for the IBM 704. The design was begun in 1954 and a compiler released in April 1957.
[Was this the first Fortran?]
- Fortran ii
1958. Added subroutines.
- Fortran iii
This was only distributed to ca. 20 sites. See Wexelblat.
- Fortran iv
IBM 1962. For the IBM 7090/94. Many implementations went well beyond the original definition.
Scientific Computer Assocs .