LOGIC GATE
AND Gate:
Graphical Symbol
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Truth Table
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A B O=A.B
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0 0 0
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0 1 0
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1 0 0
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1 1 1
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Venn Diagram

OR
Gate
Graphical Symbol
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Truth
Table
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0 0 0
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0 1 1
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1 0 1
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1 1 1
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Venn
Diagram 

Graphical Symbol
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Truth Table
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Input
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Output
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A
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O=A’
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0
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1
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1
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0
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Venn Diagram
Truth Table|
Input
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Output
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O=(A.B)’
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0 0
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1
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0 1
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1
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1 0
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1
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1 1
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0
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Venn Diagram

NOR Gate
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Graphical Symbol|
Input
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Output
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A B
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O=(A+B)’
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0 0
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1
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0 1
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0
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1 0
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0
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1 1
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0
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Truth Table
NAND Gate
Graphical Symbol
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Venn Diagram

X-OR Gate
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Graphical Symbol
Truth Table
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Input
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Output
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O=(A+B)
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0 0
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0
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0 1
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1
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1 0
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1
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1 1
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0
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Venn Diagram

X-NOR Gate
Graphical
Symbol
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Truth Table
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Input
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Output
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A
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B
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O=(A+B)’
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0
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0
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1
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0
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1
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0
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1
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0
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0
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1
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1
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1
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Venn Diagram



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