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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. If they’re dinosaurs, they’re T-Rexes and desktops and server computers are puny mammals to be trodden underfoot.
It’s estimated that there are 10,000 mainframes in use today. They’re used almost exclusively by the largest companies in the world, including two-thirds of Fortune 500 companies, 45 of the world’s top 50 banks, eight of the top 10 insurers, seven of the top 10 global retailers, and eight of the top 10 telecommunications companies. And most of those mainframes come from IBM.
In this explainer, we’ll look at the IBM mainframe computer—what it is, how it works, and why it’s still going strong after over 50 years.
Setting the stage
Mainframes descended directly from the technology of the first computers in the 1950s. Instead of being streamlined into low-cost desktop or server use, though, they evolved to handle massive data workloads, like bulk data processing and high-volume financial transactions.
Vacuum tubes, magnetic core memory, magnetic drum storage, tape drives, and punched cards were the foundation of the IBM 701 in 1952, the IBM 704 in 1954, and the IBM 1401 in 1959. Primitive by today’s standards, these machines provided the functions of scientific calculations and data processing that would otherwise have to be done by hand or mechanical calculators. There was a ready market for these machines, and IBM sold them as fast as it could make them.
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A Z16 Mainframe.
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James' World 2 
Jul 28, 2023 @ 09:17:50
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Jul 28, 2023 @ 21:04:08
Thank you!
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