I breadboarded this simple circuit to introduce and demonstrate the basic logic gates to my friends as a part of physics presentation at school.
The circuit is based on IC 7400 (Nand-gate) and 7402 (NOR-gate). AND, OR and NOT gates are created using the NAND and NOR gates.
Two switches are used as logic inputs and two accompanying LEDs indicate the status of the switch. The third LED indicates the output.
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