Digital Electronics/Logic Gates Summary

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 1
NOT Q = NOT A A Q
0 1
1 0
AND AND Gate Q = A . B A B Q
0 0 0
0 1 0
1 0 0
1 1 1
NAND NAND Gate Q =NOT (A . B) A B Q
0 0 1
0 1 1
1 0 1
1 1 0
OR Q = A + B A B Q
0 0 0
0 1 1
1 0 1
1 1 1
NOR NOR Gate Q = NOT (A + B) A B Q
0 0 1
0 1 0
1 0 0
1 1 0
XOR Q = A + B A B Q
0 0 0
0 1 1
1 0 1
1 1 0
XNOR Q = A + B A B Q
0 0 0
0 1 1
1 0 1
1 1 1
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