SAGE was an air-defense system, consisting of over 20 locations across the US. Each housed an A/N FSQ-7 computer, which had around 60,000 vacuum tubes. IBM constructed the hardware, based on the Whirlwind, and each computer occupied a huge amount of space. From it's completion in 1954 it analysed radar data in real-time, to provide a complete picture of US Airspace during the cold war.
 

SAGE was an air-defense system, consisting of over 20 locations across the US. Each housed an A/N FSQ-7 computer, which had around 60,000 vacuum tubes. IBM constructed the hardware, based on the Whirlwind, and each computer occupied a huge amount of space. From it's completion in 1954 it analysed radar data in real-time, to provide a complete picture of US Airspace during the cold war.

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Computer History Museum Photo Gallery: weird, fascinating photos including a giant Cray, and a 60Kg hard drive

Zara Baxter toured the Computer History Museum in California, and took these fascinating photos, including a giant 27Kg hard drive, a Star Trek-like SAGE Air defence system, and other intriguing artifacts. Scroll down for the captions! Click to enlarge photos.

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