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2. IBM mainframe - Wikipedia

   en.wikipedia.org/wiki/IBM_mainframe

   IBM mainframe. IBM mainframes are large computer systems produced by IBM since 1952. During the 1960s and 1970s, IBM dominated the computer market with the 7000 series and the later System/360, followed by the System/370. Current mainframe computers in IBM's line of business computers are developments of the basic design of the System/360.

3. Job Entry Subsystem 2/3 - Wikipedia

   en.wikipedia.org/wiki/Job_Entry_Subsystem_2/3

   Job Entry Subsystem 2/3. The Job Entry Subsystem (JES) is a component of IBM 's MVS 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.

4. Job Control Language - Wikipedia

   en.wikipedia.org/wiki/Job_Control_Language

   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 ...

5. History of IBM mainframe operating systems - Wikipedia

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

   The history of IBM mainframe operating systems is significant within the history of mainframe operating systems, because of IBM 's long-standing position as the world's largest hardware supplier of mainframe computers. IBM mainframes run operating systems supplied by IBM and by third parties. The operating systems on early IBM mainframes have ...

6. IBM System/360 - Wikipedia

   en.wikipedia.org/wiki/IBM_System/360

   ESA/390. z/Architecture. v. t. e. The IBM System/360 ( S/360) is a family of mainframe computer systems that was announced by IBM on April 7, 1964, and delivered between 1965 and 1978. [1] It was the first family of computers designed to cover both commercial and scientific applications and a complete range of applications from small to large.

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, 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.