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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. 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.

  4. IBM System/360 - Wikipedia

    en.wikipedia.org/wiki/IBM_System/360

    S/370-XA. ESA/370. ESA/390. z/Architecture. v. t. e. The IBM System/360 (S/360) is a family of mainframe computer systems announced by IBM on April 7, 1964, and delivered between 1965 and 1978. [1] System/360 was the first family of computers designed to cover both commercial and scientific applications and a complete range of applications from ...

  5. Classes of computers - Wikipedia

    en.wikipedia.org/wiki/Classes_of_computers

    Classes of computers. Different types of computers – clockwise from top left: Desktop computer (IBM ThinkCentre S50 with monitor) Smartphone (LYF Water 2) Supercomputer (IBM Blue Gene/P) Video game console (Nintendo GameCube) Computers can be classified, or typed, in many ways. Some common classifications of computers are given below.

  6. IBM System/370 - Wikipedia

    en.wikipedia.org/wiki/IBM_System/370

    The IBM System/370 (S/370) is a range of IBM mainframe computers announced as the successors to the System/360 family on June 30, 1970. The series mostly [b] maintains backward compatibility with the S/360, allowing an easy migration path for customers; this, plus improved performance, were the dominant themes of the product announcement.

  7. General Comprehensive Operating System - Wikipedia

    en.wikipedia.org/wiki/General_Comprehensive...

    GCOS is a multithreading, multiprogramming operating system originally oriented towards batch processing, although later versions incorporated enhancements for timesharing and online transaction processing environments. Systems running GCOS today use it mainly for batch and OLTP, or as a backend enterprise server.

  8. COBOL - Wikipedia

    en.wikipedia.org/wiki/COBOL

    COBOL (/ ˈkoʊbɒl, - bɔːl /; an acronym for "common business-oriented language") is a compiled English-like computer programming language designed for business use. It is an imperative, procedural, and, since 2002, object-oriented language. COBOL is primarily used in business, finance, and administrative systems for companies and governments.

  9. IBM 700/7000 series - Wikipedia

    en.wikipedia.org/wiki/IBM_700/7000_series

    z/Architecture. v. t. e. The IBM 700/7000 series is a series of large-scale (mainframe) computer systems that were made by IBM through the 1950s and early 1960s. The series includes several different, incompatible processor architectures. The 700s use vacuum-tube logic and were made obsolete by the introduction of the transistorized 7000s.