Margaret Hamilton, NASA's lead developer for Apollo program, stands next to all the code she wrote by hand that took humanity to the moon in 1969
this post was submitted on 11 Jul 2023
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Still assembly. Nasa's Apollo Guidance Computer Assembly specifically. A punch card is to translate the code into 1s and 0s that, each line of which, constitutes an instruction that is fed to a punch card reader. However, that is not what this was made for. This code didn't went on to a punch card, it went to an instruction loom. The system's read-only memory consisted of a weave of ferromagnetic rings and copper wire that is called rope core memory. As in, Nasa paid people to carefully physically weave by hand the individual 1s and 0s.
Afaik, the loom thing was just for the computer on the Apollo itself, but I could be wrong.