Manual

-71-
What does “one-shot” mean to you?
T
urn the switch to A, and see what happens to LED
1 when you press the key once at a time. Try
holding the key down for different periods while
watching LED 1. Does LED 1 stay on the same
length of time or does it change?
Regardless of the length of the input, you see that a
one-shot multivibrator has an output for a certain
length of time. (It “fires one shot.”) This means that
it can be applied in many circuits as a timer. This
circuit is also called a monostable multivibrator.
Notes:
EXPERIMENT #54: A ONE-SHOT TTL
Wiring Sequence:
o 81-75-49-53-31-131
o 33-58
o 50-55
o 51-82-83-109
o 52-56-57-115
o 54-77-116
o 59-60-62-78-84-138-121
o 76-110-137
o 119-132
Schematic
EP-130_62315RevC.qxp_EP-130_062812 6/23/15 11:17 AM Page 71