In logic circuits, the Toffoli gate, also known as the CCNOT gate ("controlled-controlled-not"), invented by Tommaso Toffoli in 1980 is a CNOT gate with two control bits and one target bit. That is, the target bit (third bit) will be inverted if and only if the first and second bits are both 1.
In logic circuits, the Toffoli gate, also known as the CCNOT gate ("controlled-controlled-not"), invented by Tommaso Toffoli in 1980 is a CNOT gate with two control bits and one target bit. That is, the target bit (third bit) will be inverted if and only if the first and second bits are both 1.
Source: Wikipedia "Toffoli gate" · CC BY-SA 4.0
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