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AAS 2 > Digital Theory & Microprocessors > Flashcards

Digital Theory & Microprocessors Flashcards

1
Q

A conducting logic circuit is considered to be:

A

True

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2
Q

A modulo 10 counter is known as:

A

A decade counter

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3
Q

The 8/4/2/1 designation is used to define the base for which system?

A

The Binary-Coded-Decimal system

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4
Q

A non-conducting logic circuit is considered to be:

A

False

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5
Q

Convert 15( base 10) to octal.

A

17(base 8)

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6
Q

Convert ABC (base 16) to binary.

A

1010 1011 1100

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7
Q

Convert 0100 1000(BCD) to decimal.

A

48

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8
Q

Convert 576(base 10) to BCD.

A

0101 0111 0110

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9
Q

How many inputs are associated with a J-K flip-flop?

A

5

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10
Q

How many R-S flip-flops would be required to store an eight digit binary number?

A

8

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11
Q

In order to provide a 1 logic state in a TTL circuit, what voltage is required to be present?

A

2.4 - 5.0 v

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12
Q

To achieve the fastest computing speed from adders how should they be installed?

A

In parallel

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13
Q

Two logic gates ( an AND gate and a NOT gate respectively) are connected in series. What is the resultant single logic gate equivalent.

A

NAND

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14
Q

What is the purpose of a capacitor installed to ground in a TTL circuit?

A

Channel/shunt power spikes to ground.

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15
Q

What is the radix of the binary numbering system?

A

2

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16
Q

What is the radix of the decimal numbering system?

A

10

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17
Q

What logic gate has one input and always produces the opposite of the input at the output .

A

NOT

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18
Q

What reference can be used which provides a list of input combinations and their corresponding outputs that characterizes a digital devices function?

A

Truth Table

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19
Q

Which digit is the LSD in the number 1876.0?

A

6

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20
Q

Which digit is the MSD of the number 1876.0?

A

1

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21
Q

Which logic gate has two inputs (A and B) and one output whose Boolean value is “A + B.”

A

OR

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22
Q

Which logic gate provides a 1 output only if all the inputs are logic 1?

A

AND

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23
Q

Which of the following is a base 8 system?

A

Octal

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24
Q

Which two-input logic gate produces a 1 when either input is a one but not both.

A

XOR

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25
Q

Which type of adder adds two binary numbers and produces no carry?

A

Quarter adder

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26
Q

What is the “D” Flip-Flop’s operational condition/state when the “CLK” input transitions to “High”, the “D” input is a “1”, and the “Q” output is a “1”?

A

Store “1”

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27
Q

What is the “D” Flip-Flop’s operational condition/state when the “CLK” input transitions to “High”, the “D” input is a “0”, and the “Q” output is a “0”?

A

Store “0”

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28
Q

What is the “D” Flip-Flop’s operational condition/state when the “CLK” input is “0”, the “D” input is a “1”, and the “Q” output is a “0”?

A

Start

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29
Q

What is the operational condition/state of an “R-S Flip-Flop” if the “R” input is “1”, the “S” input is “1”, and both the “Q” & “Not-Q” outputs are in their previous condition?

A

Latched

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30
Q

What is the operational condition/state of an “R-S Flip-Flop” if the “R” input is “0”, the “S” input is “1”, and the “Q” output is “1” & the “Not-Q” output is “0”?

A

Set

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31
Q

What is the operational condition/state of an “R-S Flip-Flop” if the “R” input is “1”, the “S” input is “0”, and the “Q” output is “0” & the “Not-Q” output is “1”?

A

Reset

32
Q

What is the operational condition/state of an “R-S Flip-Flop” if the “R” input is “1”, the “S” input is “1”, and the “Q” output is “1” & the “Not-Q” output is “1”?

A

Jammed

33
Q

What is the operational condition/state of an “J-K Flip-Flop” if the “J” input is “0”, the “K” input is “0”, and the “CLK” input is “1”, the “Q” output is “Q” & the “Not-Q” output is “Not Q “?

A

No Change

34
Q

What is the operational condition/state of an “J-K Flip-Flop” if the “J” input is “1”, the “K” input is “0”, and the “CLK” input is “1”, the “Q” output is “1” & the “Not-Q” output is “0”?

A

Set

35
Q

What is the operational condition/state of an “J-K Flip-Flop” if the “J” input is “0”, the “K” input is “1”, and the “CLK” input is “1”, the “Q” output is “0” & the “Not-Q” output is “1”?

A

Reset

36
Q

What is the operational condition/state of an “J-K Flip-Flop” if the “J” input is “1”, the “K” input is “1”, and the “CLK” input is “1”, the “Q” output is “1” & the “Not-Q” output is “1”?

A

Toggle

37
Q

What condition or state is an R-S Flip-Flop in when both “Q” and “Not-Q” outputs are high (logic 1)?

A

Jammed

38
Q

What condition or state is a J-K Flip-Flop in when the”J” input is 1, the “K” input is 1, and the “CLK” (Clock) input is 1?

A

Toggle

39
Q

What condition or state is an R-S Flip-Flop in when the “R” input is 0, the “S” input is 1, the “Q” output is 1, and the “Not-Q” output is 0?

A

Set

40
Q

What is another name for an Astable Multivibrator?

A

Free-Running Multivibrator

41
Q

What is another name for a Bi-stable Multivibrator?

A

Flip-Flop and Frequency Divider

42
Q

What is another name for a Mono-stable Multivibrator?

A

Single-shot or One-shot Multivibrator

43
Q

If the input frequency of a Bi-stable Multivibrator is 2.25 MHz, what is the output frequency?

A

1.125 MHz

44
Q

A program contains 1,600 bits of information. How many Bytes does it contain?

A

200

45
Q

What is the function of the program counter?

A

Keeps track of the sequence of instructions to be executed.

46
Q

Four (4) bits is known as what?

A

A Nibble

47
Q

What is used to locate data in memory?

A

Address

48
Q

Inside a dynamic RAM chip, what component acts as a switch?

A

Transistor

49
Q

The set of microprocessor software commands that allow a programmer to control the functions of the microprocessor is known as what?

A

Instruction Set

50
Q

How many basic sets of instructions are normally associated with a microprocessor?

A

9

51
Q

Two (2) nibbles equals:

A

A Byte

52
Q

Which section/component of a computer keeps track of the address of the instruction fetched from memory?

A

Program Counter

53
Q

Which type of memory must be refreshed periodically?

A

Dynamic RAM

54
Q

What section/component of a computer determines the word size for a microprocessor?

A

Accumulator

55
Q

How many basic parts constitute a microprocessor?

A

4

56
Q

If the memory word in a microprocessor is 64 bits wide, the accumulator must be __________ bits wide.

A

64

57
Q

What section is a set of logic circuitry which is basically an adder?

A

ALU

58
Q

Which register determines the maximum word size for the microprocessor?

A

Accumulator

59
Q

A signal from an external device requesting service in the form of receiving or transmitting data is known as what?

A

An interrupt (IRQ)

60
Q

What computer section decodes instructions that enter the computer?

A

Control Unit

61
Q

Inside a dynamic RAM chip, what component holds the bit information?

A

Capacitor

62
Q

Which register retains a computer’s binary data?

A

Memory Register

63
Q

Which register determines the maximum memory size of the computer?

A

Memory Register

64
Q

How do you determine Chip Density?

A

Multiply chip depth by chip width.

65
Q

What term is used to indicate the smallest possible unit of digital information?

A

Bit

66
Q

Which section of the computer performs math logic and decision making operations?

A

ALU

67
Q

Which section/ component of the computer temporarily stores results of computations?

A

RAM

68
Q

The component/section of a computer that decodes the instruction(s) gathered from the data register is called what?

A

Instruction Decoder

69
Q

How many basic blocks or sections make up all digital computers?

A

5

70
Q

Inside a static RAM chip, what component holds the bit information?

A

Flip-Flop

71
Q

A program contains 800 bits of information. How many Bytes does this equal?

A

100 Bytes

72
Q

When you logically “AND” the numbers [0010 1110 1100] with [1111 0110 0100] the result is:

A

0010 0110 0100

73
Q

When you logically “OR” the numbers [0010 1110 1100] with [1111 0110 0100] the result is:

A

1111 1110 1100

74
Q

The simplest way to _______________ a number by four (4) is to use the Move/Shift command, moving the bits left two (2) times.

A

Multiply

75
Q

The simplest way to _______________ a number by four (4) is to use the Move/Shift command, moving the bits right two (2) times.

A

Divide

76
Q

To add two numbers together inside the microprocessor, use the _______________ command from the instruction set.

A

Add

77
Q

To increment the program counter by one, use the _________________ command from the instruction set.

A

Increment

AAS 2 (6 decks)

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