Electronics/Combination gates
Complement of Basic Logic gates
editBasic Gates Combination Gates Symbol Mathematical Expression BUFFER 
Y = is NOT NOT A
Y = ANOT Y = is NOT A NAND 
Y = NOT A AND B NOR 
Y = NOT A OR B XNOR 
Y = NOT A NOR B
Truth table of the combination gates
A B Q = A Q = NOT A Q = A NAND B Q = A NOR B Q = A XOR B 0 0 0 1 1 0 0 0 1 0 1 1 0 1 1 0 1 0 1 0 1 1 1 1 0 0 1 0
XOR
edit- (A AND B) OR (A OR B) = A XOR B
- (A.B) + (A+B) = A+B