Question 1

In order to decode a multiplexer from a remote location, a _____must share the same address or select bits.

Accepted Answer

The answer of In order to decode a multiplexer from...

Question 2

Usually, a decoder circuit without bubbles on the outputs has only one output HIGH while all the other outputs are LOW.

Accepted Answer

A) True 
 B)False

Question 3

Storing three digits entered by a keypad would require two four- bit registers.

Accepted Answer

A) True 
 B)False

Question 4

When different sets of data are appearing on the same output line at different times, the data is:

Accepted Answer

A)  time- division multiplexed. 
B)  frequency- shifted multiplexed. 
C)  frequency- shifted demultiplexed. 
D)  time- division demultiplexed. 
A)  time- division multiplexed. 
B)  frequency- shifted multiplexed. 
C)  frequency- shifted demultiplexed. 
D)  time- division demultiplexed.

Question 5

A decoder has outputs labeled  through  . The output gates for this device are:

Accepted Answer

A)  NAND gates. 
B)  NOR gates. 
C)  AND gates. 
D)  XNOR gates. 
A)  NAND gates. 
B)  NOR gates. 
C)  AND gates. 
D)  XNOR gates.

Question 6

Some decoders have one or more _____	inputs that are used to control the operation of the decoder.

Accepted Answer

The answer of Some decoders have one or more _____	inputs...

Question 7

One would normally expect a 16- input multiplexer to have a minimum of:

Accepted Answer

A)  16- input data lines and three input select lines. 
B)  16- input data lines and five input select lines. 
C)  16- input data lines and two input select lines. 
D)  16- input data lines and four input select lines 
A)  16- input data lines and three input select lines. 
B)  16- input data lines and five input select lines. 
C)  16- input data lines and two input select lines. 
D)  16- input data lines and four input select lines

Question 8

Data can be transferred to or taken from a data bus through tri- state_____, which accept and send data when enabled.

Accepted Answer

The answer of Data can be transferred to or taken...

Question 9

Which of the following 7- segment displays would be best suited for operation in a totally dark environment?

Accepted Answer

A)  7- segment LED 
B)  7- segment LCD 
C)  Either A or B 
A)  7- segment LED 
B)  7- segment LCD 
C)  Either A or B

Question 10

Bus contention arises when more than one register output is "enabled" at the same time on a single data bus line. This condition will cause:

Accepted Answer

A)  uncertain logic levels and possible damage to the register output buffers. 
B)  uncertain logic levels and possible damage to the input data lines of the registers contending for the bus. 
C)  uncertain logic levels and possible damage to the bus line. 
A)  uncertain logic levels and possible damage to the register output buffers. 
B)  uncertain logic levels and possible damage to the input data lines of the registers contending for the bus. 
C)  uncertain logic levels and possible damage to the bus line.

Question 11

Internal computer registers that store data are often connected to the computer data bus lines by:

Accepted Answer

A)  totem- pole output devices. 
B)  quad input AND gates. 
C)  open- collector devices. 
D)  tri- state buffers. 
A)  totem- pole output devices. 
B)  quad input AND gates. 
C)  open- collector devices. 
D)  tri- state buffers.

Question 12

A BCD decoder that has active HIGH outputs would require a common_____7- segment LED display.

Accepted Answer

A)  cathode 
B)  anode or common cathode 
C)  anode 
D)  Neither a common anode or a common cathode 7- segment LED would be satisfactory for this decoder. 
A)  cathode 
B)  anode or common cathode 
C)  anode 
D)  Neither a common anode or a common cathode 7- segment LED would be satisfactory for this decoder.

Question 13

In contrast to other types of decoders, display decoder/drivers activate more than one output for any given input.

Accepted Answer

A) True 
 B)False

Question 14

The IEEE/ANSI symbol for a decoder has the internal designation BCD/DEC. This means the decoder is a:

Accepted Answer

A)  binary coded decimal to decimal decoder with ten inputs and four outputs. 
B)  binary coded decimal to decimal decoder with four inputs and ten outputs. 
C)  decimal to binary coded decimal decoder with ten inputs and four outputs. 
D)  decimal to binary coded decimal decoder with four inputs and ten outputs. 
A)  binary coded decimal to decimal decoder with ten inputs and four outputs. 
B)  binary coded decimal to decimal decoder with four inputs and ten outputs. 
C)  decimal to binary coded decimal decoder with ten inputs and four outputs. 
D)  decimal to binary coded decimal decoder with four inputs and ten outputs.

Question 15

In a 1- of- 10 BCD- to- decimal decoder:

Accepted Answer

A)  only one output line is activated at any one time. 
B)  output lines 0- 9 will be activated with any valid input BCD code. 
C)  ten output lines are usually activated at the same time. 
D)  output line four will be activated when the input code is 01012. 
A)  only one output line is activated at any one time. 
B)  output lines 0- 9 will be activated with any valid input BCD code. 
C)  ten output lines are usually activated at the same time. 
D)  output line four will be activated when the input code is 01012.

Question 16

A code_____is a logic circuit that changes data presented in one type of binary code to another type of binary code.

Accepted Answer

The answer of A code_____is a logic circuit that changes...

Question 17

How many input lines would be required for a 1- of- 8 decoder?

Accepted Answer

A)  5 
B)  3 
C)  2 
D)  4 
A)  5 
B)  3 
C)  2 
D)  4

Question 18

Decoders are normally used whenever:

Accepted Answer

A)  an output or group of outputs is to be activated only when a specific combination of inputs occur. 
B)  inputs are totally random and the active outputs are nonsequential. 
C)  outputs are to be activated on a random time- share basis independent of the input combinations. 
D)  outputs are to be activated that are identical to the multiple inputs. 
A)  an output or group of outputs is to be activated only when a specific combination of inputs occur. 
B)  inputs are totally random and the active outputs are nonsequential. 
C)  outputs are to be activated on a random time- share basis independent of the input combinations. 
D)  outputs are to be activated that are identical to the multiple inputs.

Question 19

A _____takes thee data applied to a single input and distributes it over several outputs.

Accepted Answer

The answer of A _____takes thee data applied to a...

Question 20

The circuit for a decoder is basically the same as for a multiplexer.

Accepted Answer

A) True 
 B)False

In order to decode a multiplexer from a remote location, a _____must share the same address or select bits.

Usually, a decoder circuit without bubbles on the outputs has only one output HIGH while all the other outputs are LOW.

Storing three digits entered by a keypad would require two four- bit registers.

When different sets of data are appearing on the same output line at different times, the data is:

A decoder has outputs labeled through . The output gates for this device are:

Some decoders have one or more _____ inputs that are used to control the operation of the decoder.

One would normally expect a 16- input multiplexer to have a minimum of:

Data can be transferred to or taken from a data bus through tri- state_____, which accept and send data when enabled.

Which of the following 7- segment displays would be best suited for operation in a totally dark environment?

Bus contention arises when more than one register output is "enabled" at the same time on a single data bus line. This condition will cause:

Internal computer registers that store data are often connected to the computer data bus lines by:

A BCD decoder that has active HIGH outputs would require a common_____7- segment LED display.

In contrast to other types of decoders, display decoder/drivers activate more than one output for any given input.

The IEEE/ANSI symbol for a decoder has the internal designation BCD/DEC. This means the decoder is a:

In a 1- of- 10 BCD- to- decimal decoder:

A code_____is a logic circuit that changes data presented in one type of binary code to another type of binary code.

How many input lines would be required for a 1- of- 8 decoder?

Decoders are normally used whenever:

A _____takes thee data applied to a single input and distributes it over several outputs.

The circuit for a decoder is basically the same as for a multiplexer.

Introductory Concepts

Number Systems and Codes

Describing Logic Circuits

Combinational Logic Circuits

Flip-Flops and Related Devices

Digital Arithmetic: Operations and Circuits

Counters and Registers

Integrated-Circuit Logic Families

Digital System Projects Using HDL

Interfacing With the Analog World

Memory Devices

Programmable Logic Device Architectures

Filters

Exam 9: MSI Logic Circuits

In order to decode a multiplexer from a remote location, a _____must share the same address or select bits.

Usually, a decoder circuit without bubbles on the outputs has only one output HIGH while all the other outputs are LOW.

Storing three digits entered by a keypad would require two four- bit registers.

When different sets of data are appearing on the same output line at different times, the data is:

A decoder has outputs labeled through . The output gates for this device are:

Some decoders have one or more _____ inputs that are used to control the operation of the decoder.

One would normally expect a 16- input multiplexer to have a minimum of:

Data can be transferred to or taken from a data bus through tri- state_____, which accept and send data when enabled.

Which of the following 7- segment displays would be best suited for operation in a totally dark environment?

Bus contention arises when more than one register output is "enabled" at the same time on a single data bus line. This condition will cause:

Internal computer registers that store data are often connected to the computer data bus lines by:

A BCD decoder that has active HIGH outputs would require a common_____7- segment LED display.

In contrast to other types of decoders, display decoder/drivers activate more than one output for any given input.

The IEEE/ANSI symbol for a decoder has the internal designation BCD/DEC. This means the decoder is a:

In a 1- of- 10 BCD- to- decimal decoder:

A code_____is a logic circuit that changes data presented in one type of binary code to another type of binary code.

How many input lines would be required for a 1- of- 8 decoder?

Decoders are normally used whenever:

A _____takes thee data applied to a single input and distributes it over several outputs.

The circuit for a decoder is basically the same as for a multiplexer.

Introductory Concepts

Number Systems and Codes

Describing Logic Circuits

Combinational Logic Circuits

Flip-Flops and Related Devices

Digital Arithmetic: Operations and Circuits

Counters and Registers

Integrated-Circuit Logic Families

Digital System Projects Using HDL

Interfacing With the Analog World

Memory Devices

Programmable Logic Device Architectures

Filters