Data Sheet

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82. More AND/OR Gate Logic
Build the circuit shown on the left and turn on the switch (62). Now
touch the reed switch (83) with the magnet (7) or press the press
switch (61) and you will light up both LEDs. If you want to turn off
the LEDs, you can either turn off the switch (62) or turn off both the
press switch (61) and the reed switch (83). Using the logical diagrams
from project #81, you could represent the logic in this circuit as shown
below.
83. Applications of the Press Switch
In this circuit, if you want to turn on both the LEDs you can turn on the
switch (62), or turn on the reed switch (83) and the press switch (61)
at the same time. Some of the common applications of the press switch
(61) are for doorbells, keys on your keyboard, and laser pointers.
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1st level