IBM System/360

The IBM System/360 is a family of compatible mainframe computers announced in 1964. Its shared architecture let different models run the same software and peripherals.

IBM System/360 architecture: The instruction set and system design shared by IBM System/360 models. It defined the compatibility that distinguished the family across different models.
IBM System/360 operating systems: Operating systems developed for IBM System/360 computers, including OS/360 and DOS/360. They managed the shared hardware while supporting different workloads and installation sizes.
IBM 1401: A widely used IBM business computer introduced in 1959, designed for data processing with punched cards and tape. Its popularity exposed the difficulty of migrating customers to incompatible successor systems.
Gene Amdahl: A computer architect who led key System/360 design work at IBM before founding Amdahl Corporation. He helped define the architecture and later challenged IBM with compatible mainframes.
IBM System/370: IBM's mainframe family announced in 1970 as the successor to System/360. It extended the architecture's lineage while adding new capabilities.
IBM System/360 instruction set: The machine-language operations and data formats supported by System/360 processors. A common instruction set let programs move among compatible System/360 models.
OS/360: IBM's multiprogramming operating system for the System/360 family. Its development tested the promise of one software platform across many models.
IBM 7090: A transistorized IBM scientific computer introduced in 1959 for high-speed numerical work. It represented a separate product line that System/360 aimed to unify with business computing.
Fred Brooks: An IBM computer scientist who managed System/360 hardware development and later wrote about software project management. His account of the project documented the organizational challenge of building the family.
Amdahl Corporation: A computer company founded by Gene Amdahl that built IBM-compatible mainframes. Its products turned System/360 compatibility into a competitive market standard.

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