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  1. What is a mainframe? - IBM

    Mainframes are data servers that are designed to process up to 1 trillion web transactions daily with the highest levels of security and reliability. At their core, mainframes are high …

  2. Mainframe computer - Wikipedia

    A mainframe computer is large but not as large as a supercomputer and has more processing power than some other classes of computers, such as minicomputers, workstations, and …

  3. What is a Mainframe Computer? - GeeksforGeeks

    Jul 12, 2025 · In simple terms, mainframe computers are super-fast and reliable machines that help process large amounts of data quickly and efficiently. They are designed to ensure that …

  4. What is a Mainframe - Mainframe Explained - AWS

    A mainframe is a large computer that runs critical business applications requiring a significant amount of processing power. Banks and other large organizations often require this computing …

  5. What is a Mainframe Computer? Complete Beginner's Guide 2025

    Nov 3, 2025 · This comprehensive beginner's guide explains what mainframe computers are, how they work, their history, real-world applications, and why they remain essential for processing …

  6. What Is a Mainframe? Features, Importance, and Examples

    Jan 19, 2023 · A mainframe is a powerful computer that connects to multiple end clients so that users can access apps concurrently. A mainframe is defined as a large, powerful computer …

  7. Mainframe | Definition & Facts | Britannica

    Nov 12, 2025 · 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 …

  8. What Is a Mainframe? | Definition from TechTarget

    Apr 12, 2023 · 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 …

  9. What is a Mainframe Computer?

    In reality, mainframe interfaces today look much the same as those for personal computers. Now a days, people around the world connect to the Mainframe Computer, remotely over internet, …

  10. What Is a Mainframe Computer? Definition, examples

    A mainframe computer, often referred to as “big iron”, is a powerful computing system used by large organizations for essential tasks such as mass data processing and enterprise resource …