XOR

1. The connective "exclusive or". One way to state its meaning in plain English is "if either A or B, but not if both."

   The XOR of (0,0) is 0; (0,1) is 1; (1,0) is 1; and (1,1) is 0.

2. A logic gate that implements "exclusive or".

3. The symbolic representation that implements "exclusive or".

   XOR can be used to add bits without carrying.

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