It was later used in the 1960s by early NASA Mars space probes and then in the Apollo Guidance Computer (AGC),[1] which was built by Raytheon.
The software for the AGC was written by programmers at the Massachusetts Institute of Technology (MIT) Instrumentation Lab, and was woven into core rope memory by female workers in factories.
[3] Similar to magnetic-core memory, magnetic rings (or cores) are used to determine the data of the software.
This induces a small voltage on the sense wires passing through them, which can then be used to interpret binary data.
This prevents the sense wires from detecting polarity changes from the other magnetic cores.