HB made logic circuits using Sparkfun components. They discussed the differences between logic and electronic circuits, drew truth tables for AND and OR gates, then for NOR and XOR.
HB found two different ways to build a NOR gate and drew out the truth table. Next they worked out how to build an XOR gate from AND, OR, and NOT gates.
To finish they made a circuit with 3 inputs and drew out its circuit diagram and truth table.
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