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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.
Launch of IBM System/360 – the first series of compatible computers, reversing and stopping the evolution of separate "business" and "scientific" machine architectures; all models used the same basic instruction set architecture and register sizes, in theory allowing programs to be migrated to more or less powerful models as needs changed.
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.
Stephen White, A Brief History of Computing; The Computer History in time and space, Graphing Project, an attempt to build a graphical image of computer history, in particular operating systems. The Computer Revolution/Timeline at Wikibooks "File:Timeline.pdf - Engineering and Technology History Wiki" (PDF). ethw.org. 2012.
Upgraded IBM Personal Computer: March 1983: PC DOS 2.0 Microsoft: Hard disk drive, subdirectories, device drivers: IBM Personal Computer XT: November 1983: PC DOS 2.1 Microsoft: Half-height disk drives, ROM cartridges: IBM PCjr: August 1984: PC DOS 3.0 Microsoft: Support for larger disks IBM Personal Computer/AT: April 1985: PC DOS 3.1 ...
IBM M44/44X, an experimental paging operating system, is in use at Thomas J. Watson Research Center. IBM announces the IBM System/360-67, a 32-bit CPU with virtual memory hardware (August 1965). 1966. IBM ships the S/360-67 computer in June 1966. IBM begins work on CP-67, a re-implementation of CP-40 for the S/360-67. 1967
On August 12th, 1981, IBM introduced their first PC model, also known as the 5150. Can you imagine functioning today IBM releases its first personal computer on This Day in History, August 12th, 1981
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.