Elenco Snap Circuits® Home Learning - Manual (Page 29)

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Materials List
1 3-Snap Wire
1 Battery Holder (B1)
1 LED (D1)
1 100 Ohm Resistor (R1)
1 Slide Switch (S1)
1 Press Switch (S2)
Build the circuit as shown. What do you have to do to make the LED light up? Use the Truth Table to help you with your
answer. _______________________________________________________________________________________________
Is this a series or parallel circuit? _______________________________________
Combinations of Logic Circuits and electronic switches are used to add and multiply numbers together in modern computers.
The computer circuits are made of tiny transistors in massive integrated circuits. The integrated circuit shown below has been
enlarged many times to show you the circuits. It's actual size is smaller than the head of a pin.
S1 S2 D1
OFF OFF
ON OFF
OFF ON
ON ON
Activity 20
This AND That