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Practice Problems to become familiar with circuits and circuit diagrams
Resistors
The Breadboard
Practice ProblemIdentify the various components in this breadboard circuit.
+ -5 volts 0 volts
Resistors
Light emitting diodes
AND Logic Devices (7408)
Light emitting diodes
Digital component
Dip Switches
Dip Switches(8 separate switches in the set)
Resistors
The Breadboard
Practice Problem Draw the circuit diagram for the breadboard circuit presented below.
+ -5 volts 0 volts
The Breadboard
Practice Problem
+ -5 volts 0 volts
There are actually 2 separate circuits on this breadboard.
One is on the green side of the breadboard.
The other is on the blue side of the breadboard.
Let’s do the green side circuit first
Draw the circuit diagram for the breadboard c circuit presented below.
The Breadboard
Practice Problem
+ -
5 volts 0 volts
+
- LED
A
B
Switch “A” has two positions
Open
Closed
Switch “B” has two positions
Open
Closed
Both switches are shown above in the open position
Draw the circuit diagram for the circuit on Green side of breadboard
The Breadboard
Practice Problem
+ -
5 volts 0 volts
+
- LED
A
B
Switch “A” has two positions
Open
Closed
Switch “B” has two positions
Open
Closed
Is the light on or off right now?
Is the light on or off if switch “A” is closed?
Is the light on or off if switch “A” is open but switch “B” is closed?
Sorry no answers provided yet, you should work this out yourself.
For now, push on to the blue circuit.
Is there a unique combination of switch settings for the light to be on?
The Breadboard
Practice Problem
+
-
+ -
5 volts 0 volts
Draw the circuit diagram for the circuit on blue side of breadboard
LED
+
-
7408
1 2 3 4 5 6 7
814
The Breadboard
Practice Problem
+ -
5 volts 0 volts
Draw the circuit diagram for the circuit on blue side of breadboard
+ -
5 volts 0 volts
+
-
+
-
LED
7408
1 2 3 4 5 6 7
814
The Breadboard
Practice Problem
LED
Draw the circuit diagram for the circuit on blue side of breadboard
+
-
LED
7408
1 2 3 4 5 6 7
814
LED
The Breadboard
Practice Problem
LED
+
-
LED
7408
1 2 3 4 5 6 7
814
LED
Switch “A” has two positions
Open
Closed
Switch “B” has two positions
Open
Closed
A
B
Is LED # 1 on or off if switch “A” is open?
# 1
Is LED # 2 on or off if switch “B” is closed?
# 2
Is LED # 3 on or off if switch “B” is closed?
# 3
The Breadboard
Practice Problem
LED
+
-
LED
7408
1 2 3 4 5 6 7
814
LED
Switch “A” has two positions
Open
Closed
Switch “B” has two positions
Open
Closed
A
B
Is LED # 1 on or off if switch “A” is open?
# 1
Is LED # 2 on or off if switch “B” is closed?
# 2
Is LED # 3 on or off if switch “B” is closed?
# 3
