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ASSIGNMENT 4
Textbook assignment: Chapter 4, “Special Logic Circuits,” pages 3-3 through 3-67.
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4-1. Which of the following circuits will add
two binary digits but not produce a
carry?
1. AND gate
2. Half adder
3. Quarter adder
4. Summation amplifier
Figure 4A.—Logic circuit.
IN ANSWERING QUESTIONS 4-2
THROUGH 4-5, REFER TO FIGURE 4A.
4-2. What type of circuit is depicted in the
figure?
1. Inverter amplifier
2. Half subtracter
3. Half adder
4. Quarter adder
4-3. Which of the following gates will have
HIGH outputs when K is HIGH and L is
LOW?
1. 1 only
2. 3 only
3. 1 and 2
4. 1 and 3
4-4. What will be the output of gate 3 when
K and L are both HIGH?
1. LOW
2. HIGH
4-5. Assume that K and L are both HIGH.
Which of the following statements
represents the output of gate 3?
1. 1 plus 1 = 0 (No carry)
2. 1 plus 0 = 1
3. 0 plus 1 = 1
4. 0 plus 0 = 0
4-6. Which of the following gates performs
the same function as a quarter adder?
1. Half adder
2. Exclusive OR
3. NOR
4. Exclusive NOR
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INTENTIONALLY.
