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Key Facts In This Video
Punch cards and tape drives, popular forms of computer memory in the 1960s, were too heavy to fly to space and couldn't withstand the journey anyway. 01:11
Core rope memory coded ones and zeros into magnets and wires woven on a specialized loom. 01:53
To represent a one, a worker weaved a wire through a magnetic donut. To represent a zero, the wire was woven outside of it. 02:18