z/OS photograph

Z/OS

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Platforms z/Architecture
Latest releaseVersion 2. 3 (V2R3) / September 29, 2017; 22 months ago
Initial release March 30, 2001 (V1R1, announced October, 2000)
Developers IBM
Marketing targetEnterprise / Mainframes
Programming languages C
C++
IBM High Level Assembler
IBM PL/S
Date of Reg.
Date of Upd.
ID1078001
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About Z/OS


z/OS is a 64-bit operating system for IBM mainframes, produced by IBM. It derives from and is the successor to OS/390, which in turn followed a string of MVS versions. Like OS/390, z/OS combines a number of formerly separate, related products, some of which are still optional.

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