Does the Space Shuttle's Computer Really Run on Just One Megabyte of RAM?

It's true: The brain of NASA's primary vehicle has the computational power of an IBM 5150, that '80s icon that goes for $20 at yard sales. According to NASA and IBM, the shuttle's General Purpose Computer (GPC)-which controls, among other things, the entire launch sequence-is an upgrade of the 500-kilobyte computer the shuttle flew with until 1991.

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