In pictures: The (mostly) cool history of the IBM mainframe

IBM's iconic mainframe turns 50: In its history the IBM mainframe has been hailed and vilified. It has been born, reborn (many times) and pronounced dead. And yet the Big Iron remains a key computing resource for many large companies and will do so for many years. Here we take a look at the mainframe’s long history, from its use with the US space program to its prominence inside large business datacentres. Take a look.

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From the Computer History Museum we see the IBM System/360 Model 30 computer that McDonnell Aircraft Corporation bought the first Model 30, the smallest and least expensive of the three System/360 models shipped in 1965. It could emulate IBM’s older small computer, the 1401, which encouraged customers to upgrade.

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In pictures: The (mostly) cool history of the IBM mainframe

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