Question 1

Accepted Answer

A) True 
 B)False

Question 2

Why are multiple NAND gates often used in place of other single function gates?

Accepted Answer

A)  It is easier to design logic circuits with a single gate type, since you only have to fully understand how one type of gate works. 
B)  It makes it possible to use spare portions of NAND IC packages to implement other logic functions, perhaps reducing the total IC package count. 
C)  NAND gates are cheaper than any other type of gate. 
D)  NAND gates are packaged more densely on IC's than other types of gates. 
A)  It is easier to design logic circuits with a single gate type, since you only have to fully understand how one type of gate works. 
B)  It makes it possible to use spare portions of NAND IC packages to implement other logic functions, perhaps reducing the total IC package count. 
C)  NAND gates are cheaper than any other type of gate. 
D)  NAND gates are packaged more densely on IC's than other types of gates.

Question 3

The relationship between a NOR gate and a negative- AND gate is expressed by 	.

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 4

The reason that NOR logic networks are often drawn as shown in this figure, is _________.

Accepted Answer

A)  to make it easier to determine the logical output 
B)  to help make the transition to a K- map 
C)  that it shows the actual gate arrangement 
D)  to minimize the number of parts required 
A)  to make it easier to determine the logical output 
B)  to help make the transition to a K- map 
C)  that it shows the actual gate arrangement 
D)  to minimize the number of parts required

Question 5

An output gate is connected to four input gates; the circuit does not function. Preliminary tests with a DMM indicate that power is applied; scope tests show that the primary input gate has a pulsing signal, while the interconnecting node has no signal. The four load gates are all on different IC's. Which instrument will best help isolate the problem?

Accepted Answer

A)  Oscilloscope 
B)  Logic analyzer 
C)  Current tracer 
D)  Logic probe 
A)  Oscilloscope 
B)  Logic analyzer 
C)  Current tracer 
D)  Logic probe

Question 6

The point identified as 'X' in this figure is referred to as _______.

Accepted Answer

A)  a reference point 
B)  a node 
C)  common 
D)  a tie point 
A)  a reference point 
B)  a node 
C)  common 
D)  a tie point

Question 7

is in the form of a sum- of- products expression.

Accepted Answer

A) True 
 B)False

Question 8

The relationship between a NAND gate and a negative- OR gate is expressed by__________.

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 9

What is the indication of an open in the output of a driving gate?

Accepted Answer

A)  Only the output of the defective gate is affected. 
B)  The affected node will be stuck in the HIGH state. 
C)  There is a signal loss to all load gates. 
D)  The affected node will be stuck in the LOW state. 
A)  Only the output of the defective gate is affected. 
B)  The affected node will be stuck in the HIGH state. 
C)  There is a signal loss to all load gates. 
D)  The affected node will be stuck in the LOW state.

Question 10

The commonly accepted abbreviation for an exclusive- OR gate is XOR.

Accepted Answer

A) True 
 B)False

Question 11

-Which of the following logic expressions represents the logic diagram in Figure 5- 1?

Accepted Answer

A)  X = AB + AB 
B)    
C)    
D)    
A)  X = AB + AB 
B)    
C)    
D)

Question 12

Which output waveform is correct for the circuit input waveforms shown?

Accepted Answer

A)  Output (
A)  
B)  Output (
B)  
C)  Output (
C)  
D)  Output (
D)  
A)  Output (
A)  
B)  Output (
B)  
C)  Output (
C)  
D)  Output (
D)

Question 13

-Which circuit in Figure 5- 3 represents the NAND implementation of a NOR gate?

Accepted Answer

A)  Figure (
A) . 
B)  Figure(
B)  . 
C)  Figure (
C) . 
D)  Figure (
D) . 
A)  Figure (
A) . 
B)  Figure(
B)  . 
C)  Figure (
C) . 
D)  Figure (
D) .

Question 14

-A correct logic expression for Figure 5- 2 is _________.

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 15

-Which circuit in Figure 5- 4 represents the NOR implementation of an AND gate?

Accepted Answer

A)  Figure (
A)  
B)  Figure (
B)  
C)  Figure (
C)  
D)  Figure (
D)  
A)  Figure (
A)  
B)  Figure (
B)  
C)  Figure (
C)  
D)  Figure (
D)

Question 16

The waveforms are correct for the logic circuit shown.

Accepted Answer

A) True 
 B)False

Question 17

Which circuit is the logical equivalent of the Reference Circuit?

Accepted Answer

A)  Figure (
A)  
B)  Figure (
B)  
C)  Figure (
C)  
D)  Figure (
D)  
A)  Figure (
A)  
B)  Figure (
B)  
C)  Figure (
C)  
D)  Figure (
D)

Question 18

The effect of an inverted output being connected to the inverting input of another gate is to effectively eliminate one of the inversions, resulting in a single inversion.

Accepted Answer

A) True 
 B)False

Why are multiple NAND gates often used in place of other single function gates?

The relationship between a NOR gate and a negative- AND gate is expressed by .

The reason that NOR logic networks are often drawn as shown in this figure, is _________.

The point identified as 'X' in this figure is referred to as _______.

is in the form of a sum- of- products expression.

The relationship between a NAND gate and a negative- OR gate is expressed by__________.

What is the indication of an open in the output of a driving gate?

The commonly accepted abbreviation for an exclusive- OR gate is XOR.

-Which of the following logic expressions represents the logic diagram in Figure 5- 1?

Which output waveform is correct for the circuit input waveforms shown?

-Which circuit in Figure 5- 3 represents the NAND implementation of a NOR gate?

-A correct logic expression for Figure 5- 2 is _________.

-Which circuit in Figure 5- 4 represents the NOR implementation of an AND gate?

The waveforms are correct for the logic circuit shown.

Which circuit is the logical equivalent of the Reference Circuit?

The effect of an inverted output being connected to the inverting input of another gate is to effectively eliminate one of the inversions, resulting in a single inversion.

Introductory Concepts

Number Systems, Operations, and Codes

Logic Gates

Boolean Algebra and Logic Simplification

Functions of Combinational Logic

Latches, Flip-Flops, and Timers

Shift Registers

Counters

Programmable Logic

Data Storage

Signal Conversion and Processing

Data Transmission

Data Processing and Control

Integrated Circuit Technologies

Filters

Exam 5: Combinational Logic Analysis

Why are multiple NAND gates often used in place of other single function gates?

The relationship between a NOR gate and a negative- AND gate is expressed by .

The reason that NOR logic networks are often drawn as shown in this figure, is _________.

The point identified as 'X' in this figure is referred to as _______.

is in the form of a sum- of- products expression.

The relationship between a NAND gate and a negative- OR gate is expressed by__________.

What is the indication of an open in the output of a driving gate?

The commonly accepted abbreviation for an exclusive- OR gate is XOR.

-Which of the following logic expressions represents the logic diagram in Figure 5- 1?

Which output waveform is correct for the circuit input waveforms shown?

-Which circuit in Figure 5- 3 represents the NAND implementation of a NOR gate?

-A correct logic expression for Figure 5- 2 is _________.

-Which circuit in Figure 5- 4 represents the NOR implementation of an AND gate?

The waveforms are correct for the logic circuit shown.

Which circuit is the logical equivalent of the Reference Circuit?

The effect of an inverted output being connected to the inverting input of another gate is to effectively eliminate one of the inversions, resulting in a single inversion.

Introductory Concepts

Number Systems, Operations, and Codes

Logic Gates

Boolean Algebra and Logic Simplification

Functions of Combinational Logic

Latches, Flip-Flops, and Timers

Shift Registers

Counters

Programmable Logic

Data Storage

Signal Conversion and Processing

Data Transmission

Data Processing and Control

Integrated Circuit Technologies

Filters