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Mainframe computers are computers used primarily by large organizations for critical applications; bulk data processing, such as census, industry and consumer statistics, enterprise resource planning; and transaction processing.

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Mainframe computers (colloquially referred to as "big iron") arecomputers used primarily by large organizations for critical applications, bulk data processing, such as census, industry and consumer statistics, enterprise resource planning, and transaction processing.

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Mainframe computers (colloquially referred to as "big iron") are computers used primarily by large organizations for critical applications, bulk data processing, such as census, industry and consumer statistics, enterprise resource planning, and transaction processing.

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Mainframe computers (colloquially referred to as "big iron") are computers used primarily by large organizations for critical applications, bulk data processing, such as census, industry and consumer statistics, enterprise resource planning, and transaction processing. Mainframe operating systems are sophisticated products with substantially different characteristics and purposes.

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Mainframe computers (colloquially referred to as "big iron") are computers used primarily by large organizations for critical applications, bulk data processing, such as census, industry and consumer statistics, enterprise resource planning, and transaction processing. Mainframe operating systems are sophisticated products with substantially different characteristics and purposes.
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Mainframe is high performance computer mainly used for large data computing. Mainly financial sectors use it. Also companies which are involved in medicine, health and insurance use it. IBM has its setup and consultancy companies like Infosys, Cognizant, Accenture, Capgemini etc use it and pay IBM as per the usage. A software engineer must be pro in domains like COBOL(common business oriented Language), JCL, CICS
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A high-performance computer used for large-scale computing purposes. It is also known as big iron.
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It can also process millions of instructions per seconds, and capable of accessing billions of data.

Its generally used in large hospitals, air line reservation companies, and many other huge companies.

Its very costly, and out-of-reach of salary-based person who wants computer for his home

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A mainframe is a high-performance computer used for large-scale computing purposes. It is also known as big iron

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