Electronics/Combination gates

Complement of Basic Logic gates

Basic Gates Combination Gates Symbol Mathematical Expression
BUFFER Cổng NOT (NOT Gate) Y = is NOT NOT A
Y = A
NOT Cổng NOT (NOT Gate) Cổng NOT (NOT Gate) Y = is NOT A
NAND Cổng NOT (NOT Gate) Y = NOT A AND B
NOR Cổng NOT (NOT Gate) 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

(A AND B) OR (A OR B) = A XOR B
(A.B) + (A+B) = A+B
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