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In the 1950s, the United States of America developed the SAGE system, an acronym for semi-automatic ground environment. The name was selected to mean “wise”.
This system of large computers and associated networking equipment coordinated data from many radar sites and processed them to produce a single unified image of the airspace over a wide area.
What many people do not know is that the SAGE system was actually quite expensive. To be precise, it cost more than the Manhattan project. The American air-defense system required building of the largest computer ever.
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The SAGE system was used from the 1950s to the 1980s. This documentary shows the development process of the system, and how it was used.
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