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Mainframe computer - Wikipedia
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.

What Is a Mainframe? - IBM
The term mainframe initially referred to the large cabinet or ‘main frame’ that held the central processing unit (CPU) of early computer systems. The mainframe served as a central data repository or ‘hub’ that links workstations or terminals in an organization’s data processing center.

What is a Mainframe Computer? - GeeksforGeeks
Mainframe computers are a type of computer designed for high throughput, which means processing data as fast as possible. They are primarily used for transaction processing, which involves a set of operations like disk read and write, operating system calls, and data transfer between subsystems.

What Is a Mainframe? Features, Importance, and Examples
A mainframe is a powerful computer that connects to multiple end clients so that users can access apps concurrently.

Mainframe Architecture
The mainframe system architecture is a complex, highly scalable, and secure structure to handle large-scale processing of transactions, data, and critical applications. Here’s a breakdown of the architecture and its key components:

What Is a Mainframe? | Definition from TechTarget
A mainframe, also known as big iron, is a high-performance computer used for large-scale, compute-intensive purposes and tasks that require greater availability and security than smaller-scale machines. Historically, mainframes have been associated with centralized rather than distributed computing.

Mainframe | Definition & Facts | Britannica
Mainframe, digital computer designed for high-speed data processing with heavy use of input/output units such as large-capacity disks and printers. Mainframes have been used for such applications as payroll computations, accounting, business transactions, information retrieval, airline seat

What Is a Mainframe? | phoenixNAP IT Glossary
A mainframe is a high-performance computer designed to process enormous amounts of data and execute complex calculations at scale. Mainframes typically reside in secure data centers and feature robust hardware , specialized operating systems , and extensive fault tolerance.

The IBM mainframe: How it runs and why it survives
Mainframe computers are often seen as ancient machines—practically dinosaurs. But mainframes, which are purpose-built to process enormous amounts of data, are still extremely relevant today.

Introduction to Mainframe Computers
Mainframe is the powerful central computer (CPU) in a data processing center, linked to thousands of users through less powerful devicessuch as PC workstations or terminals(just monitor and keyboard).

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