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General Comprehensive Operating System
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<p>General Comprehensive Operating System (GCOS, /ˈdʒiːkoʊs/; originally GECOS, General Electric Comprehensive Operating Supervisor) is a family of <a href="/facts/Operating_system/8XTuvMh2">operating systems</a> oriented toward the 36-bit <a href="/facts/GE-600_series/mHM0TeUS">GE-600 series</a> and <a href="/facts/Honeywell_6000_series/Ez1dTEyo">Honeywell 6000 series</a> <a href="/facts/Mainframe_computer/nrBR6rWa">mainframe computers</a>. </p><p>The original version of GCOS was developed by <a href="/facts/General_Electric/bBm5CzVY">General Electric</a> beginning in 1962. The operating system is still used today in its most recent versions (GCOS 7 and GCOS 8) on servers and mainframes produced by <a href="/facts/Groupe_Bull/tlbdToLt">Groupe Bull</a>, primarily through emulation, to provide continuity with legacy mainframe environments. GCOS 7 and GCOS 8 are separate branches of the operating system and continue to be developed alongside each other. </p>