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Mainframe

Terminology

A mainframe is an organization's central data repository (»hub«).

It is accessed by less powerful devices: workstations and terminals.

Operating System

The foremost IBM mainframe operating system is z/OS.

Others are z/VM, z/VSE, Linux on IBM System and z/TPF.

Historical development

1954: IBM 705

1959: IBM 1401

IBM 1401 (»Model T«), probably the first mass-produced digital, all-transitorized business computer that was affordable by some companies.

1964: IBM System/360 (»S/360«) starts the third generation.

S/3690 were superseded by the System z machines.

Index

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