

I don’t know what they used on the moon landing, though.
An efficient, real-time multitasking software stack on a 2MHz processor with the equivalent of ~4K of RAM and 64K of ROM.
Smart enough to handle being accidentally overloaded by its operators and still balance a spacecraft on a single engine and land on the moon while doing multiple reboots to clear its software stack. It would work its way down a list of “fly a spacecraft” tasks from critical, to informational, to just monitoring, with a certain amount of time allocated to complete the whole list. If it ran out of time, it would drop everything, perform the equivalent of a reboot with navigation parameters parked in memory, and then start again at the most critical task.
Apollo 11’s crew accidentally left their rendezvous radar (which was checking on the location of the command module in orbit) in a mode that constantly poked the computer with “pay attention to me” interrupts, and it couldn’t service the radar and run through it’s task list completely while it was on descent to the lunar surface.
To the programming team’s credit, this just caused an overload alarm a few times and the mission completed successfully.
The Apollo programmers pretty much created the whole software engineering field from scratch in the 10 years before 1969.

This is not like the days of old where television/radio/newspapers pushed their opinions to the public en masse. It’s social media, where everything is tailored to you, personally, available to you on your personal device that you carry with you everywhere 24/7, and it makes it so much harder to resist it.
That couldn’t happen with the mass media of old. It wasn’t tailored for you, so there were enough rough edges that you could stop and say “Hey, this guy’s an asshole!” and break the loop. It wasn’t with you all the time , sneaking in during that 30 second scroll of your phone when you’re bored.
Now, it’s continuous reinforcement where a tiny aspect of your profile matches a tiny part of their message, so you see it in your feed, and then it slowly cycles you through more and more of what they want you to see, until your interests match their interests and their opinions seem normal, because you see them all the time.
Brainwashing, essentially. And it’s very hard to get yourself out of it.