Elenco Circuit Maker Sound Plus 200 - Manual (Page 25)

-24-
Project #34
Build the circuit at left and test the combinations of the slide switch (S1)
and press switch (S2). If you compare it to the OR circuit in Project #32,
you can see the LED (D1) lights in the opposite combinations of that
circuit. Hence, we refer to it as a NOR circuit (short for “NOT this OR
that”). Like the OR and AND, it is an important building block in
computers.
Neither This NOR That
Project #35
Build the circuit at left and test the combinations of the slide switch (S1)
and press switch (S2). If you compare it to the AND circuit in Project #33,
you can see the LED (D1) lights in the opposite combinations of that
circuit. Hence, we refer to it as a NAND circuit (short for “NOT this AND
that”). This circuit can also have more or less than two inputs, though
when it only has one input it is referred to as a NOT circuit. Like the OR,
AND, and NOR, NAND and NOT are important building blocks in
computers.
NOT This AND That
CM-200_Manual_031914.qxp_CM-200_Manual_031914 4/2/14 12:04 PM Page 25