Commercial Operating System

Commercial Operating System (COS) is a discontinued family of operating systems from Digital Equipment Corporation.

Commercial Operating System (COS)
DeveloperDigital Equipment Corporation
Initial release1972
Available inEnglish
PlatformsPDP-8, PDP-11, DECmate II
LicenseProprietary
Preceded byMS/8

They supported the use of DIBOL, a programming language combining features of BASIC, FORTRAN and COBOL. COS also supported IBM RPG (Report Program Generator).

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