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ASSIGNMENT 3
Textbook assignment: Chapter 2, “Fundamental Logic Circuits,” pages 2-1 through 2-36; and "Special
Logic Circuits," Chapter 3, pages 3-1 through 3-3.
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NOTE: UNLESS OTHERWISE INDICATED,
ALL QUESTIONS AND ANSWERS REFER
TO POSITIVE LOGIC.
3-1. Logic is the development of a reasonable
conclusion based on known information.
1. T
2. F
3-2. Which of the following methods is used
to represent the FALSE condition of the
logic symbol, F?
1. (F)
2. [F]
3.
F
4. F
3-3. Which of the following statements
describes logic polarity?
1. Negative logic is indicated by a
vinculum
2. Positive logic is always represented
by a positive voltage
3. A logic 1 is a positive voltage; a
logic 0 is a negative voltage
4. The change in voltage polarity to
represent a logic 1
3-4. Which of the following examples
represents positive logic?
1. -5v equals 0, -10v equals 1
2. +5v equals 0, +10v equals 1
3. +5v equals 1, +10v equals 0
4. -5v equals 1, +5v equals 0
3-5. Of the following examples, choose the
one that represents negative logic.
1. -15v equals 0, -10v equals 1
2. -10v equals 1, -15v equals 0
3. 0v equals 0, -10v equals 1
4. -5v equals 0, 0v equals 1
3-6. If the letter X represents an input to a
logic device, what logic state of X must
exist to activate the device or contribute
to the activation of the device?
1.
0
2.
1
3. Positive logic
4. Negative logic
3-7. A chart that lists all possible input
combinations and resultant output is
called a
1. Truth Table
2. Decision Table
3. logic symbol listing
4. polarity magnitude listing
3-8. What is a logic gate?
1. A block diagram
2. An astable multivibrator
3. A bistable multivibrator
4. A decision-making circuit
