Question 1

Converting a decimal number to its binary equivalent is an example of encoding.

Accepted Answer

A) True 
 B)False

Question 2

The expression A BB represents_________.

Accepted Answer

A)  the sum output of a full- adder 
B)  the carry output of a full- adder 
C)  the carry output of a half- adder 
D)  the sum output of a half- adder 
A)  the sum output of a full- adder 
B)  the carry output of a full- adder 
C)  the carry output of a half- adder 
D)  the sum output of a half- adder

Question 3

In binary addition, 1 + 1 = 10.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is correct for full- adders?

Accepted Answer

A)  Full- adders are limited to two inputs, since there are only two binary digits. 
B)  Full- adders have the capability of directly adding decimal numbers. 
C)  Full- adders are used to make half- adders. 
D)  The first stage of a parallel full- adder may be a half- adder. 
A)  Full- adders are limited to two inputs, since there are only two binary digits. 
B)  Full- adders have the capability of directly adding decimal numbers. 
C)  Full- adders are used to make half- adders. 
D)  The first stage of a parallel full- adder may be a half- adder.

Question 5

Demultiplexers are also known as data distributors.

Accepted Answer

A) True 
 B)False

Question 6

A BCD- to- 7- segment decoder can be classified as a 10- line to 7- line decoder.

Accepted Answer

A) True 
 B)False

Question 7

A mux basically reverses the function of a demux.

Accepted Answer

A) True 
 B)False

Question 8

What is one disadvantage of the ripple- carry adder?

Accepted Answer

A)  More stages are required to a full- adder. 
B)  It is slow, due to propagation time. 
C)  The interconnections are more complex. 
D)  All of the above are correct. 
A)  More stages are required to a full- adder. 
B)  It is slow, due to propagation time. 
C)  The interconnections are more complex. 
D)  All of the above are correct.

Question 9

The function of a decoder is to break a decimal or other character code down into a binary code.

Accepted Answer

A) True 
 B)False

Question 10

A multiplexer with four select, or address, lines can select one of _______inputs.

Accepted Answer

A)  16 
B)  15 
C)  7 
D)  3 
A)  16 
B)  15 
C)  7 
D)  3

Question 11

‪  
-The symbol in Figure 6- 1 represents a(n)_______.

Accepted Answer

A)  PLD 
B)  half- adder 
C)  full- adder 
D)  AND function 
A)  PLD 
B)  half- adder 
C)  full- adder 
D)  AND function

Question 12

Which of the following is true for IC comparator circuits?

Accepted Answer

A)  All comparators have outputs for indicating AB, and A=B. 
B)  Comparators can compare only two values at a time. 
C)  Comparators can compare only 2 bits at a time. 
D)  None of these 
A)  All comparators have outputs for indicating AB, and A=B. 
B)  Comparators can compare only two values at a time. 
C)  Comparators can compare only 2 bits at a time. 
D)  None of these

Question 13

A 1- of- 16 decoder IC has ________data input connection(s).

Accepted Answer

A)  4 
B)  8 
C)  1 
D)  16 
A)  4 
B)  8 
C)  1 
D)  16

Question 14

Decoder glitches can be eliminated by a method known as stripping.

Accepted Answer

A) True 
 B)False

Question 15

A demux basically reverses the function of a mux.

Accepted Answer

A) True 
 B)False

Question 16

-Refer to the symbol in Figure 6- 2. What are the output when A = 1, B = 1, Cin = 0?

Accepted Answer

A)  ? = 1, Cout = 0 
B)  ? =1, Cout = 1 
C)  ? = 0, Cout = 0 
D)  ? = 0, Cout = 1 
A)  ? = 1, Cout = 0 
B)  ? =1, Cout = 1 
C)  ? = 0, Cout = 0 
D)  ? = 0, Cout = 1

Question 17

-Refer to the symbol in Figure 6- 2. What are the output when A = 1, B = 1, Cin = 1?

Accepted Answer

A)  ?=1, Cout = 1 
B)  ? = 1, Cout = 0 
C)  ? = 0, Cout = 1 
D)  ? = 0, Cout = 0 
A)  ?=1, Cout = 1 
B)  ? = 1, Cout = 0 
C)  ? = 0, Cout = 1 
D)  ? = 0, Cout = 0

Question 18

The expression ?   describes _______. .

Accepted Answer

A)  the sum output of a half- adder 
B)  the carry output of a full- adder 
C)  the carry output of a half- adder 
D)  the sum output of a full- adder 
A)  the sum output of a half- adder 
B)  the carry output of a full- adder 
C)  the carry output of a half- adder 
D)  the sum output of a full- adder

Question 19

When paralleling 2- bit full- adders, the carry- out of each stage is connected to the carry- in of the next- higher stage.

Accepted Answer

A) True 
 B)False

Question 20

What is another name used for a multiplexer?

Accepted Answer

A)  Attenuator 
B)  Demultiplexer 
C)  Data selector 
D)  Multiplier 
A)  Attenuator 
B)  Demultiplexer 
C)  Data selector 
D)  Multiplier

Converting a decimal number to its binary equivalent is an example of encoding.

The expression A BB represents_________.

In binary addition, 1 + 1 = 10.

Which of the following is correct for full- adders?

Demultiplexers are also known as data distributors.

A BCD- to- 7- segment decoder can be classified as a 10- line to 7- line decoder.

A mux basically reverses the function of a demux.

What is one disadvantage of the ripple- carry adder?

The function of a decoder is to break a decimal or other character code down into a binary code.

A multiplexer with four select, or address, lines can select one of _______inputs.

‪ -The symbol in Figure 6- 1 represents a(n)_______.

Which of the following is true for IC comparator circuits?

A 1- of- 16 decoder IC has ________data input connection(s).

Decoder glitches can be eliminated by a method known as stripping.

A demux basically reverses the function of a mux.

-Refer to the symbol in Figure 6- 2. What are the output when A = 1, B = 1, C_in= 0?

-Refer to the symbol in Figure 6- 2. What are the output when A = 1, B = 1, C_in= 1?

The expression ? describes _______. .

When paralleling 2- bit full- adders, the carry- out of each stage is connected to the carry- in of the next- higher stage.

What is another name used for a multiplexer?

Introductory Concepts

Number Systems, Operations, and Codes

Logic Gates

Boolean Algebra and Logic Simplification

Combinational Logic Analysis

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 6: Functions of Combinational Logic

Converting a decimal number to its binary equivalent is an example of encoding.

The expression A BB represents_________.

In binary addition, 1 + 1 = 10.

Which of the following is correct for full- adders?

Demultiplexers are also known as data distributors.

A BCD- to- 7- segment decoder can be classified as a 10- line to 7- line decoder.

A mux basically reverses the function of a demux.

What is one disadvantage of the ripple- carry adder?

The function of a decoder is to break a decimal or other character code down into a binary code.

A multiplexer with four select, or address, lines can select one of _______inputs.

‪ -The symbol in Figure 6- 1 represents a(n)_______.

Which of the following is true for IC comparator circuits?

A 1- of- 16 decoder IC has ________data input connection(s).

Decoder glitches can be eliminated by a method known as stripping.

A demux basically reverses the function of a mux.

-Refer to the symbol in Figure 6- 2. What are the output when A = 1, B = 1, Cin = 0?

-Refer to the symbol in Figure 6- 2. What are the output when A = 1, B = 1, Cin = 1?

The expression ? describes _______. .

When paralleling 2- bit full- adders, the carry- out of each stage is connected to the carry- in of the next- higher stage.

What is another name used for a multiplexer?

Introductory Concepts

Number Systems, Operations, and Codes

Logic Gates

Boolean Algebra and Logic Simplification

Combinational Logic Analysis

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

-Refer to the symbol in Figure 6- 2. What are the output when A = 1, B = 1, C_in= 0?

-Refer to the symbol in Figure 6- 2. What are the output when A = 1, B = 1, C_in= 1?