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  2. IBM mainframe - Wikipedia

    en.wikipedia.org/wiki/IBM_mainframe

    IBM announced the System/360 (S/360) line of mainframes in April 1964. [4] The System/360 was a single series of compatible models for both commercial and scientific use. The number " 360 " suggested a "360 degree ," or "all-around" computer system.

  3. Job Control Language - Wikipedia

    en.wikipedia.org/wiki/Job_Control_Language

    Job Control Language (JCL) is a scripting language used on IBM mainframe operating systems to instruct the system on how to run a batch job or start a subsystem. [1] The purpose of JCL is to say which programs to run, using which files or devices [2] for input or output, and at times to also indicate under what conditions to skip a step.

  4. IBM Basic assembly language and successors - Wikipedia

    en.wikipedia.org/wiki/IBM_Basic_assembly...

    As it is an assembly language, BAL uses the native instruction set of the IBM mainframe architecture on which it runs, System/360.. The successors to BAL use the native instruction sets of the IBM mainframe architectures on which they run, including System/360, System/370, System/370-XA, ESA/370, ESA/390, and z/Architecture.

  5. Job Entry Subsystem 2/3 - Wikipedia

    en.wikipedia.org/wiki/Job_Entry_Subsystem_2/3

    The Job Entry Subsystem (JES) is a component of IBM's MVS (MVS/370 through z/OS) mainframe operating systems that is responsible for managing batch workloads. In modern times, there are two distinct implementations of the Job Entry System called JES2 and JES3. They are designed to provide efficient execution of batch jobs.

  6. Hercules (emulator) - Wikipedia

    en.wikipedia.org/wiki/Hercules_(emulator)

    Hercules is a computer emulator allowing software written for IBM mainframe computers (System/370, System/390, and zSeries/System z) and for plug compatible mainframes (such as Amdahl machines) to run on other types of computer hardware, notably on low-cost personal computers. Development started in 1999 by Roger Bowler, a mainframe systems ...

  7. Mainframe computer - Wikipedia

    en.wikipedia.org/wiki/Mainframe_computer

    An IBM System z9 mainframe. 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.