Digital Electronics/Logic Gates/Combinational Gates

Combination gatesEdit

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

BufferEdit

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

NOT GateEdit

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

NAND GateEdit

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

NOR GateEdit

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

XNOR GateEdit

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