3 thoughts on “Relay computer ep. 1 – Basic logic gates

  1. The XOR function and its associated wiring diagram is identical to the function of the light switch for the stairway. One switch on the first floor, and another switch on the second floor, are wired so that the light can be activated and deactivated by either switch. These SPDT switches do not have the words "ON" and "OFF" engraved on them.

  2. 7:47 the not useful are just IFF (if and only if), NIFF (same but inverted), and IFN (if not)
    they indirectly model the imply binary relation

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