Logic Gates & Boolean Logic

The logic gates, truth tables, and Boolean expressions.

Logic gates

Gates process binary inputs (0/1):

AND — output 1 only if both inputs are 1.

OR — output 1 if either input is 1.

NOT — inverts the input.

NAND (NOT AND), NOR (NOT OR), XOR (1 if inputs differ).

Standard symbols for the AND, OR and NOT gates

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