๐ UK EM Consultant (East Midlands). Ex- many things inc South Africa rural MO, nuclear industry and Sapper POM (V). Keen to get UK EM back to being actual EM.
Not correct. The value of the cores was not set at manufacture time. The cores would have their values set either to a 1 or a 0 by simply applying 5V to the x and y wires simultaneously and the little core rings would be magnetized in that state forever or until it it received an opposite value - zero. This "half select" method of reading and writing little magnetic cores was invented by Dr. Wang of MIT who founded his own computer company in the 1970's -- Wang Electronic or Computers.
@dougthewood@jurgen_nauditt@TinuFella I honestly don't think he's a traitor, per se, but vain, vulnerable to flattery, and really not clever at all (i.e. quite stupid). And without a sense of decency, that leads him to flip-flop everywhere, because he can't see a morally correct strategy among all the nuances.