Logic Gates & Truth Tables

Inside this lesson

Define the seven basic logic gates (AND, OR, NOT, NAND, NOR, XOR, XNOR) and write their Boolean expressions
Construct truth tables for each gate from first principles
Prove that NAND is a universal gate by deriving NOT, AND, and OR from NAND-only circuits
Determine the number of rows in a truth table for any number of inputs

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Educational content covering topics typical of a first- and second-year electrical engineering curriculum. Not a substitute for accredited coursework, and not suitable for real circuit or system design without review by a licensed professional engineer.