Digital Electronics/Logic Gates/Combinational Gates

Combination gates

More than one logic gates can be connected to produce new logic gates

Buffer

Basic Logic Gates Combinational Gates Symbol Mathmatical Formula Truth Table
Buffer Cổng NOT (NOT Gate) Y = is NOT NOT A
Y = A		 A Q
0 0
1 1

NOT Gate

Digital Gate Combinational Gates Symbol Mathematical Expression Truth Table
NOT Gate Cổng NOT (NOT Gate) Cổng NOT (NOT Gate) Y = is NOT A A Y
0 1
1 0

NAND Gate

Digital Gate Combinational Gate Symbol Mathematical Expression Truth Table
Buffer Cổng NOT (NOT Gate) Y = is NOT A.B A B Y
0 0 1
0 1 1
1 0 1
1 1 0

NOR Gate

Digital Gate Combinational Gate Symbol Mathematical Expression Truth Table
NOT Cổng NOT (NOT Gate) Y = is NOT A+B A B Y
0 0 1
0 1 0
1 0 0
1 1 0

XNOR Gate

Basic Gates Combinational Gate Symbol Mathematical Formula Truth Table
NOT Gate Y = is NOT AxorB A B Q
0 0 1
0 1 0
1 0 0
1 1 1
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