Commercial Operating System
| Developer | Digital Equipment Corporation |
|---|---|
| Initial release | 1972 |
| Available in | English |
| Platforms | PDP-8, PDP-11, DECmate II |
| License | Proprietary |
| Preceded by | MS/8 |
Commercial Operating System (COS) is a discontinued family of operating systems from Digital Equipment Corporation.
They supported the use of DIBOL, a programming language combining features of BASIC, FORTRAN and COBOL. COS also supported IBM RPG (Report Program Generator).