A single-frame IBM z15 mainframe. Larger capacity models can have up to four total frames. This model has blue accents, as compared with the LinuxONE III model with orange highlig

Mainframe systems are computers able to process billions of calculations and transactions in real time, securely and reliably.

Mainframe computing enables large-scale data processing through a single, powerful central system. This system supports multiple users and terminals in real time.

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 …

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 …

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 …

Jun 20, 2025 · A modern mainframe in computer environments operates as a high-performance, multi-user platform. It handles billions of transactions daily, supports multiple operating …

Apr 16, 2025 · A mainframe is a high-performance computer designed to process enormous amounts of data and execute complex calculations at scale. Mainframes typically reside in …

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 …

Dec 23, 2025 · A mainframe is a powerful computer used for large-scale data processing. It is fast, reliable, and can support thousands of users at the same time.