Data Sheet

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383. AND Gate Applications
Build the circuit shown. Note that the siren sounds only when both
the switch (62) and the press switch (61) are on. One of the most
common applications of AND gates are as enabling circuits like this.
So for instance, the press switch (61) in the circuit could represent a
stream of digital date going into your computer and the switch (62) is
the ON-OFF switch on your computer. While the stream of data may
always be present, for instance, at an Ethernet port on your computer,
the data will only be processed by your computer when the switch (62)
is ON. So an AND gate in your computer only allows the pass through
of the Ethernet data when you power button is ON.
384. OR Gate Applications
Build the circuit shown on the left. Note that the siren sounds when
either the switch (62) or the press switch (61) are on. One application
for OR gates would be the door open light in your car. Using a circuit like
the one shown below, you can see that if any door is open (represented
by a 1), then the output of the circuit produces a 1 (the door open light
in dash comes on).