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  2. Mainframe computer - Wikipedia

    en.wikipedia.org/wiki/Mainframe_computer

    A mainframe computer, informally called a mainframe or big iron, [1] is a computer used primarily by large organizations for critical applications like bulk data processing for tasks such as censuses, industry and consumer statistics, enterprise resource planning, and large-scale transaction processing.

  3. Open system (computing) - Wikipedia

    en.wikipedia.org/wiki/Open_system_(computing)

    However, in the first part of the 21st century many of these same legacy system vendors, particularly IBM and Hewlett-Packard, began to adopt Linux as part of their overall sales strategy, with "open source" marketed as trumping "open system". Consequently, an IBM mainframe with Linux on IBM Z is marketed as being more of an open system than ...

  4. Open Mainframe Project - Wikipedia

    en.wikipedia.org/wiki/Open_Mainframe_Project

    Zowe is the first open source project for z/OS.It was announced in August 2018 at SHARE in St. Louis together with the open beta release of version 0.9 that contained contributions from[IBM, Computer Associates, and Rocket Software. [8]

  5. Channel I/O - Wikipedia

    en.wikipedia.org/wiki/Channel_I/O

    The first use of channel I/O was with the IBM 709 [2] vacuum tube mainframe in 1957, whose Model 766 Data Synchronizer was the first channel controller. The 709's transistorized successor, the IBM 7090, [3] had two to eight 6-bit channels (the 7607) and a channel multiplexor (the 7606) which could control up to eight channels.

  6. Comparison of assemblers - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_assemblers

    UNIVAC VS/9 Assembler Unisys: Proprietary: Univac 9060 and 9070 (Similar to IBM System/370) VS/9: BS2000 Assembler H Fujitsu: Proprietary: Fujitsu Technology Series SE (Similar to IBM System/370) BS2000: z390 Portable Mainframe Assembler: Don Higgins GPL: Free Simulated IBM System/370 Simulated MVS IBM High-Level Assembler (HLASM) IBM ...

  7. Transaction Processing Facility - Wikipedia

    en.wikipedia.org/wiki/Transaction_Processing...

    Transaction Processing Facility (TPF) [2] is an IBM real-time operating system for mainframe computers descended from the IBM System/360 family, including zSeries and System z9. TPF delivers fast, high-volume, high-throughput transaction processing, handling large, continuous loads of essentially simple transactions across large, geographically ...

  8. MVS - Wikipedia

    en.wikipedia.org/wiki/MVS

    Multiple Virtual Storage, more commonly called MVS, is the most commonly used operating system on the System/370, System/390 and IBM Z IBM mainframe computers. IBM developed MVS, along with OS/VS1 and SVS, as a successor to OS/360. It is unrelated to IBM's other mainframe operating system lines, e.g., VSE, VM, TPF.

  9. z/OS - Wikipedia

    en.wikipedia.org/wiki/Z/OS

    An IBM System Z10 mainframe computer on which z/OS can run. z/OS is a 64-bit operating system for IBM z/Architecture mainframes, introduced by IBM in October 2000. [2] It derives from and is the successor to OS/390, which in turn was preceded by a string of MVS versions.