LESSON 3
PRACTICE EXERCISE
1.
How many input connections can an OR gate have?
a.
Any number
b.
10
c.
8
d.
6
2.
What is the name of the switch below (fig 3-1)?
a.
OR gate
b.
NOR gate
c.
NAND gate
d.
AND gate
3.
When input A is low and input B is high, diode CR1 in Figure 3-6A is?
a.
Reverse bias
b.
Forward bias
c.
Both a and b
d.
Neither a or b
4.
On a three-input OR gate what inputs are needed to result in a low out (fig 3-4)?
a.
All highs
b.
All lows
c.
Two highs
d.
Two lows
5.
On a three-input AND gate what inputs are needed to result in a high out (fig 3-8)?
a.
All highs
b.
All lows
c.
Two highs
d.
Two lows
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