07-26-2015, 12:43 AM
How is ORE? it's been a while since I've been on, and since then I've realized something dastardly. Many people use some variant of the 5 torch XOR, when all you really need is 3 torches. All you do is take the torches off of the inputs. Think of it like this: If you invert one input of an XOR, it is the equivalent of inverting the output. Thus, if you invert both inputs, the output is double-inverted, reverting it back into an XOR. Now look at the inputs. They have double inversions themselves, which can then be replaced with a wire, taking off 2 torches and 1 tick.
This does NOT work for the standard 4-input XOR, however. that cannot be simplified further.
This does NOT work for the standard 4-input XOR, however. that cannot be simplified further.