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  2. History of IBM - Wikipedia

    en.wikipedia.org/wiki/History_of_IBM

    International Business Machines Corporation (IBM) is a multinational corporation specializing in computer technology and information technology consulting. Headquartered in Armonk, New York, the company originated from the amalgamation of various enterprises dedicated to automating routine business transactions, notably pioneering punched card-based data tabulating machines and time clocks.

  3. List of IBM Personal Computer models - Wikipedia

    en.wikipedia.org/wiki/List_of_IBM_Personal...

    The IBM Personal Computer, commonly known as the IBM PC, spanned multiple models in its first generation (including the PCjr, the Portable PC, the XT, the AT, the Convertible, and the /370 systems, among others), from 1981 to 1987. It eventually gave way to many splintering product lines after IBM introduced the Personal System/2 in April 1987.

  4. IBM - Wikipedia

    en.wikipedia.org/wiki/IBM

    IBM was founded in 1911 as the Computing-Tabulating-Recording Company (CTR), a holding company of manufacturers of record-keeping and measuring systems. It was renamed "International Business Machines" in 1924 and soon became the leading manufacturer of punch-card tabulating systems.

  5. Acquisition of the IBM PC business by Lenovo - Wikipedia

    en.wikipedia.org/wiki/Acquisition_of_the_IBM_PC...

    By the summer of 1993, the IBM PC Co. had divided into multiple business units itself, including Ambra Computer Corporation and the IBM Power Personal Systems Group, the former an attempt to design and market "clone" computers of IBM's own architecture and the latter responsible for IBM's PowerPC-based workstations. [9] [10]

  6. List of mergers and acquisitions by IBM - Wikipedia

    en.wikipedia.org/wiki/List_of_mergers_and...

    IBM logo. IBM has undergone a large number of mergers and acquisitions during a corporate history lasting over a century; the company has also produced a number of spinoffs during that time. The acquisition date listed is the date of the agreement between IBM and the subject of the acquisition.

  7. Computing-Tabulating-Recording Company - Wikipedia

    en.wikipedia.org/wiki/Computing-Tabulating...

    The Computing-Tabulating-Recording Company (CTR) [1] was a holding company of manufacturers of record-keeping and measuring systems; it was subsequently known as IBM.. In 1911, the financier and noted trust organizer Charles R. Flint, called the "Father of Trusts", amalgamated (via stock acquisition) four companies: Bundy Manufacturing Company, International Time Recording Company, the ...

  8. IBM mainframe - Wikipedia

    en.wikipedia.org/wiki/IBM_mainframe

    IBM 704 mainframe at NACA in 1957. From 1952 into the late 1960s, IBM manufactured and marketed several large computer models, known as the IBM 700/7000 series. The first-generation 700s were based on vacuum tubes, while the later, second-generation 7000s used transistors. These machines established IBM's dominance in electronic data processing ...

  9. OS/360 and successors - Wikipedia

    en.wikipedia.org/wiki/OS/360_and_successors

    OS/360, officially known as IBM System/360 Operating System, [1] [2] is a discontinued batch processing operating system developed by IBM for their then-new System/360 mainframe computer, announced in 1964; it was influenced by the earlier IBSYS/IBJOB and Input/Output Control System (IOCS) packages for the IBM 7090/7094 [citation needed] and even more so by the PR155 Operating System for the ...