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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.
The typical ordering process of modern IBM Z mainframe looks like a buying of service [50] or looks like a leasing; [51] the mainframe is a program/hardware complex with rent for a system workload, and (in the most cases) additional system capabilities can be unlocked after additional payment.
IBM Z Development and Test Environment can be used for education, demonstration, and development and test of applications that include mainframe components. The Z390 and zCOBOL is a portable macro assembler and COBOL compiler, linker, and emulator toolkit providing a way to develop, test, and deploy mainframe compatible assembler and COBOL ...
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.
The z15 is a microprocessor made by IBM for their z15 mainframe computers, announced on September 12, 2019. [2] Description.
A Honeywell Level 66/60 mainframe computer with its cabinet door open. 6000-series systems were said to be "memory oriented" — a system controller in each memory module arbitrated requests from other system components (processors, etc.).
A Sysplex Timer is a physically separate piece of hardware from the mainframe, [12] whereas STP is an integral facility within the mainframe's microcode. [13] With STP and ICFs it is possible to construct a complete Parallel Sysplex installation with two connected mainframes.
Plug compatible refers to "hardware that is designed to perform exactly like another vendor's product." [1] The term PCM was originally applied to manufacturers who made replacements for IBM peripherals. [2] Later this term was used to refer to IBM-compatible computers. [3]
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