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2. OS/360 and successors - Wikipedia

   en.wikipedia.org/wiki/OS/360_and_successors

   OS/360, officially known as IBM System/360 Operating System, [1] [2] is a discontinued batch processing operating system developed by IBM for their then-new System/360 mainframe computer, announced in 1964; it was influenced by the earlier IBSYS/IBJOB and Input/Output Control System (IOCS) packages for the IBM 7090/7094 [citation needed] and even more so by the PR155 Operating System for the ...

3. IBM 7090/94 IBSYS - Wikipedia

   en.wikipedia.org/wiki/IBM_7090/94_IBSYS

   The historical background and over-all structure of the system are discussed. Flow of jobs through the IBJOB processor, as controlled by the monitor, is also described." "IBM 7090/7094 IBSYS Operating System Version 13 System Monitor (IBSYS)", Form C28-6248-7 "IBM 7090/7094 IBSYS Operating System Version 13 IBJOB Processor", Form C28-6389-1

4. IBM i - Wikipedia

   en.wikipedia.org/wiki/IBM_i

   IBM i ships with a default user profile for each user class, and the default Security Officer user profile, named QSECOFR, is the closest equivalent to the root user of a Unix-like operating system. [77] IBM i can be set to use one of five levels of security, which control the extent to which the operating system's security features are ...

5. List of operating systems - Wikipedia

   en.wikipedia.org/wiki/List_of_operating_systems

   MTS (Michigan Terminal System, developed by a group of universities in the US, Canada, and the UK for the IBM System/360 Model 67, System/370 series, and compatible mainframes) RTOS/360 (IBM's Real Time Operating System, ran on 5 NASA custom System/360-75s) [ 16 ]

6. History of IBM mainframe operating systems - Wikipedia

   en.wikipedia.org/wiki/History_of_IBM_mainframe...

   IBM released fairly minor enhancements of OS/VS1 until 1983, and in 1984 announced that there would be no more. OS/VS1 and TSS/370 are the only IBM [51] System/370 operating systems that do not have modern descendants. The Special Real Time Operating System (SRTOS), Programming RPQ Z06751, is a variant of OS/VS1 extended to support real-time ...

7. Timeline of operating systems - Wikipedia

   en.wikipedia.org/wiki/Timeline_of_operating_systems

   General Motors Operating System made for IBM 701 [2] MIT's Tape Director operating system made for UNIVAC 1103 [3] [4] 1956 GM-NAA I/O for IBM 704, based on General Motors Operating System; 1957 Atlas Supervisor (Manchester University) (Atlas computer project start) BESYS , for IBM 704, later IBM 7090 and IBM 7094; 1958

8. IBM PC compatible - Wikipedia

   en.wikipedia.org/wiki/IBM_PC_compatible

   IBM designed the PC with an open architecture which permitted clone makers to use freely available non-proprietary components. [78] Microsoft included a clause in its contract with IBM which permitted the sale of the finished PC operating system to other computer manufacturers.

9. DOS/360 and successors - Wikipedia

   en.wikipedia.org/wiki/DOS/360_and_successors

   Disk Operating System/360, also DOS/360, or simply DOS, is the discontinued first member of a sequence of operating systems for IBM System/360, System/370 and later mainframes. It was announced by IBM on the last day of 1964, and it was first delivered in June 1966. [1] In its time, DOS/360 was the most widely used operating system in the world ...