General Comprehensive Operating System

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General Comprehensive Operating System (GCOS) refers to a family of operating systems that were originally programmed as GECOS for use on mainframes by the American company General Electric and later further developed by Honeywell . Few systems now use this software. They are mainly used because of the use of old software , which was usually written in GMAP -Assembler, Cobol , Fortran or ALGOL .

The two development branches GCOS-7 and GCOS-8 now run on mainframes from Bull Computer .

history

After Honeywell took over the computer division of General Electric in 1970, the current GECOS-III was renamed GCOS-3. GCOS-3, later also GCOS-7 and GCOS-8, supported a CODASYL- based database IDS , which was the model for the more successful ISMS .