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Starting electronics
Quiz
Answers at end of book
1 In the circuit symbol for an
NOT gate:
a the input is applied to the
side with a circle
b the output comes from the
side with a circle
c the circle implies that the
signal is turned upside down
d the triangle represents the
three signals that must be
applied
e b and c
f all of these
g none of these.
2 All logic gates can be made up
from transistors:
True or false.
3 The output of a NOT gate is:
a always logic 0
b always 5 volts
c never logic 1
d the logical opposite of the
power supply
e the logical opposite of its
input
f none of these.
4 The output of an OR gate is
logic 1 when:
a all of its inputs are logic 1
b any of its inputs are logic 1
c none of its inputs are logic 1
d a and b.
5 The output of a NOR gate is logic 1
when:
a all of its inputs are logic 1
b 10 milliamps
c any of its inputs are logic 1
d this is a trick question, the
output is always logic 1
e none of these.
6 When the output of a gate is used
as the input of a NOT gate, the
final output is:
a always the inverse of the output
of the first gate
b always the same as the output
of the first gate
c can only be calculated mathematically
by binary logic
d all of these
e none of these
f in the lap of the gods.
7 If the inputs to an OR gate are inverted
with NOT gates, the overall
gate is that of a:
a NOT gate
b NOR gate
c NAND gate
d a and b
e b and c
f none of these.
8 Any logic gate can be created from
other logic gates:
True or false.
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