: Combine them to build half-adders, the first step toward building your own calculator.

For those just starting, educational kits offer a hands-on way to visualize how electricity follows logic. Pro makers can stock up on industry-standard IC chips like the 74HC08, which packs four independent gates into a single tiny package. Texas Instruments SN74HC08ANSR IC GATE AND 4CH 2-INP 14SO Go to product viewer dialog for this item. Texas Instruments SN74LS08N Logic Gates Mouser Electronics Go to product viewer dialog for this item.

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: Control when a high-frequency clock signal is allowed to pass through to other parts of your circuit.

: Trigger an alarm only if a motion sensor is tripped AND the system is armed.

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