< Digital Electronics
The table below summarize all the Basic Digital Gates and their characteristics
Basic Logic Gates Symbol Mathmatical Formula Truth Table Constructions Buffer 
Q = A A Q
0 0
1 1NOT 
Q = NOT A A Q
0 1
1 0AND 
AND GateQ = A . B A B Q
0 0 0
0 1 0
1 0 0
1 1 1NAND AND GateQ =NOT (A . B) A B Q
0 0 1
0 1 1
1 0 1
1 1 0OR 
Q = A + B A B Q
0 0 0
0 1 1
1 0 1
1 1 1NOR Q = NOT (A + B) A B Q
0 0 1
0 1 0
1 0 0
1 1 0XOR 
Q = A + B A B Q
0 0 0
0 1 1
1 0 1
1 1 0XNOR 
Q = A + B A B Q
0 0 0
0 1 1
1 0 1
1 1 1
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