Question 1

The logic gate that generates a HIGH (1)  output only when all of its inputs are LOW (0)  is the:

Accepted Answer

A)   NAND gate.
B)   NOR gate.
C)   OR gate.
D)   AND gate.E) A) and D)
F) All of the above

Question 2

Select the Boolean expression that is the logical equivalent to the expression  .

Accepted Answer

A)   ABC
B)   
C)   A + B + C
D)   E) A) and D)
F) None of the above

Question 3

Which of the following gates generates the exact inverse output of the OR gate for all possible input combinations?

Accepted Answer

A)   NOT
B)   NOR
C)   NAND
D)   ANDE) None of the above
F) B) and C)

Question 4

An AND gate with inverters on each of its inputs is equivalent to a _______gate.

Accepted Answer

The answer of An AND gate with inverters on each...

Question 5

If you apply DeMorgan's theorem to the expression  you get:

Accepted Answer

A)   
B)   
C)   
D)   E) All of the above
F) A) and D)

Question 6

One of DeMorgan's theorems states that  Simply stated, this means that logically there is no difference between:

Accepted Answer

A)   a NOR gate and a NAND gate with inverted inputs.
B)   a NOR gate and an AND gate with inverted inputs.
C)   an AND gate and a NOR gate with inverted inputs.
D)   a NAND gate and an OR gate with inverted inputs.E) B) and D)
F) B) and C)

Question 7

How many truth table entries are required for a four- input circuit?

Accepted Answer

A)   8
B)   4
C)   12
D)   16E) None of the above
F) A) and D)

Question 8

The basic logic device that always has a single input is the:

Accepted Answer

A)   OR gate.
B)   AND gate.
C)   Comparator.
D)   Inverter.E) None of the above
F) A) and D)

Question 9

Which of the following logical operations is represented by the + sign in Boolean algebra?

Accepted Answer

A)   Inversion
B)   AND
C)   OR
D)   ComplementationE) None of the above
F) A) and B)

Question 10

Suppose that a logic gate has 3 inputs. How many possible input combinations must be listed in its accompanying truth table?

Accepted Answer

A)   210 
B)   410 
C)   810 
D)   1610E) A) and B)
F) A) and C)

Question 11

Logically, the output of a NOR gate would have the same Boolean expression as a(n) :

Accepted Answer

A)   NAND gate immediately followed by an inverter.
B)   AND gate immediately followed by an inverter.
C)   NOR gate immediately followed by an inverter.
D)   OR gate immediately followed by an inverter.E) C) and D)
F) A) and B)

Question 12

Any logic expression can be implemented using NAND gates.

Accepted Answer

A) True 
 B)False

Question 13

A certain logic gate has three inputs. The output goes LOW (0)  only when the inputs are A = 1, B =

Accepted Answer

A)   AND gate.
B)   NOR gate.
C)   NAND gate.
D)   none of the aboveE) A) and D)
F) B) and C)

Question 14

In Boolean algebra, the commutative laws indicate that:

Accepted Answer

A)   the factoring of Boolean expressions requires the multiplication of product terms that contain like variables.
B)   the order in which we OR or AND two variables does not affect the result.
C)   an expression can be expanded by multiplying term by term just the same as in ordinary algebra.
D)   we can group variables in an AND or in an OR expression any way we want.E) A) and C)
F) B) and D)

Question 15

An active signal applied to a control input is used to _______the circuit.

Accepted Answer

The answer of An active signal applied to a control...

Question 16

A ___________is used to illustrate the various input/output combinations for a logic gate.

Accepted Answer

A)   logic function diagram
B)   Boolean formula
C)   Boolean diagram
D)   truth tableE) A) and B)
F) B) and C)

Question 17

A minimum of three 2- input NOR gates would be required to perform the logical operation of a single 2- input AND gate.

Accepted Answer

A) True 
 B)False

Question 18

The logic gate that generates a LOW (0)  output when any one of its inputs are HIGH (1)  is the:

Accepted Answer

A)   NOR gate.
B)   OR gate.
C)   NAND gate.
D)   AND gate.E) B) and C)
F) A) and D)

Question 19

The basic logic circuit whose output equals the Boolean algebraic sum of its input is the:

Accepted Answer

A)   Inverter.
B)   AND gate.
C)   OR gate.
D)   Comparator.E) B) and D)
F) B) and C)

Question 20

An_______has only a single input.

Accepted Answer

The answer of An_______has only a single input....

Exam 3: Describing Logic Circuits

Select the Boolean expression that is the logical equivalent to the expression .

Correct AnswerverifiedShow Answer

Suppose that a logic gate has 3 inputs. How many possible input combinations must be listed in its accompanying truth table?

Correct AnswerverifiedShow Answer

In Boolean algebra, the commutative laws indicate that:

Correct AnswerverifiedShow Answer

An AND gate with inverters on each of its inputs is equivalent to a _______gate.

Correct AnswerverifiedShow Answer

Logically, the output of a NOR gate would have the same Boolean expression as a(n) :

Correct AnswerverifiedShow Answer

Any logic expression can be implemented using NAND gates.

Correct AnswerverifiedShow Answer

An active signal applied to a control input is used to _______the circuit.

Correct AnswerverifiedShow Answer

The logic gate that generates a LOW (0) output when any one of its inputs are HIGH (1) is the:

Correct AnswerverifiedShow Answer

An_______has only a single input.

Correct AnswerverifiedShow Answer

The basic logic device that always has a single input is the:

Correct AnswerverifiedShow Answer

One of DeMorgan's theorems states that Simply stated, this means that logically there is no difference between:

Correct AnswerverifiedShow Answer

How many truth table entries are required for a four- input circuit?

Correct AnswerverifiedShow Answer

The basic logic circuit whose output equals the Boolean algebraic sum of its input is the:

Correct AnswerverifiedShow Answer

A ___________is used to illustrate the various input/output combinations for a logic gate.

Correct AnswerverifiedShow Answer

The logic gate that generates a HIGH (1) output only when all of its inputs are LOW (0) is the:

Correct AnswerverifiedShow Answer

If you apply DeMorgan's theorem to the expression you get:

Correct AnswerverifiedShow Answer

Which of the following gates generates the exact inverse output of the OR gate for all possible input combinations?

Correct AnswerverifiedShow Answer

A certain logic gate has three inputs. The output goes LOW (0) only when the inputs are A = 1, B =

Correct AnswerverifiedShow Answer

Which of the following logical operations is represented by the + sign in Boolean algebra?

Correct AnswerverifiedShow Answer

A minimum of three 2- input NOR gates would be required to perform the logical operation of a single 2- input AND gate.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified