An f77 file extension is related to the Fortran programming language. An f77 file stores source code.

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F77 file extension - Fortran 77 language source code

What is f77 file? How to open f77 files?

File type specification:

Source code and script file type icon Source code and script file type

The f77 file extension is generally related to Fortran 77 programming language.

Fortran was developed by IBM in the 1950s for scientific and engineering applications, The f77 file contains language source code.

MIME types:

This f77 file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

Help how to open:

Use compatible tools to work with *.f77 files.

How to convert:

Probably cannot be converted to other formats.

Related links:

Fortran at Wikipedia

The Fortran Company

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