A mainframe computer, informally called a mainframe, maxicomputer, [1][2] or big iron, [3] is a computer used primarily by large organizations for critical applications like bulk data processing for tasks such …

A mainframe acts as a server for storing and processing data at high speeds and can carry out millions of instructions simultaneously. In contrast, supercomputers are much faster, capable of executing …

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 used for such …

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 critical …

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 security than …

Jun 20, 2025 · Discover what a mainframe is, its evolution, benefits, and modern applications. Learn why mainframe technology remains essential for enterprises.

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 …

What is Mainframe? A mainframe is a large, powerful and highly efficient computer system primarily used by organizations for processing vast amounts of data and running critical applications.

While mainframe is a generic term, most people instantly associate these computing workhorses with IBM and their System Z, the most popular and widely used models.