MCQ in Computer Fundamentals Part 2 | ECE Board Exam

(Last Updated On: August 2, 2018)

This is the Multiples Choice Questions Part 2 of the Series in Computer Fundamentals as one of the Electronics Engineering topic. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including but not limited to past Board Exam Questions in Electronics Engineering field, Electronics Books, Journals and other Electronics References.

MCQ Topic Outline included in ECE Board Exam Syllabi

• MCQ in analog and Digital System
• MCQ in Binary Number System
• MCQ in Boolean Algebra
• MCQ in Mathematical Logic and Switching Networks
• MCQ in Basic digital Circuits (logic gates, flip-flops, multivibrators, etc)
• MCQ in Static and dynamic Memory Devices
• MCQ in Programming and Machine Languages
• MCQ in Information and Acquisition Processing
• MCQ in Analog / Digital Conversion
• MCQ in Computer Networking

Continue Practice Exam Test Questions Part 2 of the Series

Choose the letter of the best answer in each questions.

51. How does a CMOS integrated circuit respond to a floating input?

A. Unpredictable, may overheat and be destroyed

B. Open

C. Shorted

D. Acts just like a logic 1

Solution:

52. Which of the following is NOT an internal digital IC fault?

A. Open signal lines

B. Shorted signal lines

C. Faulty power supply

D. Poor solder connections

Solution:

53. What will be the state of Q and Q’ after a flip-flop has been reset?

A. Q = 0, Q’ = 1

B. Q = 1, Q’ = 0

C. Q = 0, Q’ = 0

D. Q = 1, Q’ = 1

Solution:

54. This type of fault has the same effect as an internal short between IC pins.

A. Open signal lines

B. Shorted signal lines

C. Broken wire

D. Poor solder connections

Solution:

55. Which of the following does not describe a flip-flop circuit?

A. Latch

B. Memory

C. Bistable multivibrator

D. ROM

Solution:

56. What is the normal resting state of the SET and CLEAR inputs in a NAND gate latch?

A. SET = CLEAR = 1

B. SET = 0, CLEAR = 1

C. SET = 1, CLEAR = 0

D. SET = CLEAR = 0

Solution:

57. Add the hex numbers 58 and 24.

A. 7C

B. 7D

C. C7

D. 2C

Solution:

58. Add 3AF to 23C

A. BE5

B. 5EB

C. A3B

D. 101A

Solution:

59. All arithmetic operations take place in the _______ of a computer

A. CPU

B. ALU

C. Microprocessor

D. ROM

Solution:

60. How many inputs does a full adder have?

A. 2

B. 4

C. 8

D. 3

Solution:

61. How many outputs does a full adder have?

A. 1

B. 2

C. 4

D. 8

Solution:

62. How many inputs does a half adder have?

A. 1

B. 2

C. 3

D. 4

Solution:

63. What are the three basic parts of a BCD adder circuit?

A. Two 4-bit adders and connection logic

B. Two connection logic and one 4-bit adder

C. Two full adders and one AND gate

D. One connection logic and 4 full adders

Solution:

64. What is the principal register of an arithmetic logic unit?

A. Controller

B. Buffer

C. Actuator

D. Accumulator

Solution:

65. A computer programming language in which groups of 1s and 0s are used to represent instructions. It is also the only language a computer actually understood.

A. Application software

B. Machine language

C. High – level language

D. Programming language

Solution:

66. A digital circuit that produces an output code depending on which of its inputs is activated.

A. Decoder

B. Encoder

C. Multiplexer

D. Demultiplexer

Solution:

67. An IC that contains a large number of interconnected logic functions wherein the user can program the IC for a specific function by selectively breaking the appropriate interconnections.

A. RAM

B. ROM

C. PLD

D. PLC

Solution:

68. Class of programmable logic devices wherein its AND array is programmable while its OR array is hard-wired.

A. PAL

B. PLA

C. PLD

D. PROM

Solution:

69. Class of programmable logic devices wherein both its AND and its OR arrays are programmable.

A. Field Programmable Logic Array

B. Programmable Logic Controller

C. Programmable Logic Circuit

D. Programmable Array Logic

Solution:

70. A result which is obtained when one is added to the least significant bit position of a binary number in the 1’s complement.

A. Spike

B. 2’s complement form

C. Complement

D. Signed binary numbers

Solution:

71. A digital circuit that oscillates between two unstable output states.

A. Monostable multivibrator

B. Astable multivibrator

C. Bistable multivibrator

D. Flip-flop

Solution:

72. An electrical connection common to all segments of an LCD.

A. Dual slope

B. Bootstrap

C. Backplane

Solution:

73. A binary counter that counts from 0000 to 1001 before it recycles.

A. Buffer

B. BCD counter

C. Ring counter

D. Ripple counter

Solution:

74. A shift register in which the output of the last flip-flop is connected to the input of the first flip-flop.

A. Ring counter

B. Ripple counter

C. Parallel counter

D. BCD counter

Solution:

75. A term synonymous with CLEAR in computer systems.

A. Reset

B. Set

C. Toggle

Solution:

76. That part of a computer instruction that defines what type of operation the computer is to execute on specified data.

A. Machine language

B. Mnemonic

C. Assembly language

D. Op code

Solution:

77. An abbreviation that represents the op code of a computer instruction.

A. ASCII

B. Mnemonic

C. Octets

D. Instruction

Solution:

78. A property whereby the output of a digital-to-analog converter either increases or stays the same as the input is increased.

A. Volatility

B. Immunity

C. Monotonicity

D. Parity

Solution:

79. Class of mass memory devices that use a laser beam to write and read onto a specified coated disk.

A. Mass storage

B. RAM

C. Optical disk memory

D. Non-volatile memory

Solution:

80. A term used to describe the logic function created when open-collector outputs are tied together.

A. Wired-OR

B. Wired-AND

C. Totem-pole

D. Tristate

Solution:

81. A technique often used to eliminate decoding spikes.

A. Wired-AND

B. Strobing

C. Tristate

D. Wired-NAND

Solution:

82. A momentary, narrow, spurious and sharply defined change in volume.

A. Glitch

B. Strobe

C. Toggle

D. Clock

Solution:

83. A single bit comparator is usually implemented using

A. Exclusive OR

B. NOR gate

C. Exclusive NOR

D. Wired-AND

Solution:

84. An equivalent Boolean equation for an exclusive NOR is

A. xy + x’y’

B. xy + xy’

C. x’y + xy’

D. xy’+ x’y’

Solution:

85. Data storage in a memory is termed as

A. writing

B. memorizing

Solution:

86. Data retrieval from a memory is called

A. getting

B. accessing

D. fetching

Solution:

87. In BCD, the code 1111 is

A. letter F

B. A

C. 11

D. Invalid

Solution:

88. A decoder with four inputs can have a maximum of how many outputs?

A. 4

B. 8

C. 16

D. 32

Solution:

89. Another name for a digital multiplexer is

A. data selector

B. compressor

C. encoder

D. decoder

Solution:

90. An astable multivibrator has

A. one stable state

B. two stable states

C. no stable state

D. tristate

Solution:

91. A bistable multivibrator has

A. one stable state

B. two stable states

C. no stable state

D. tristate

Solution:

92. A monostable multivibrator has

A. one stable state

B. two stable states

C. no stable state

D. tristate

Solution:

93. A type of multivibrator circuit which generates a square wave of its own is the

A. astable

B. monostable

C. bistable

D. flip-flop

Solution:

94. A situation when a circuit’s output level for a given set of input conditions can be assigned as either a 1 or a 0.

A. Don’t care

B. Totem Pole

C. Low level

D. High level

Solution:

95. Circuits made up of combinations of logic gates, with no feedback from outputs to inputs.

A. Latch

B. Sequential logic circuit

C. Combinational logic circuit

D. Memory

Solution:

96. A digital circuit that takes a 4-bit BCD input and activates the required outputs to display the equivalent decimal digit on a 7-segment display.

A. BCD-to-decimal decoder

B. BCD-to-7-segment driver

C. Decimal to BCD driver

D. 7-segment display

Solution:

97. Asynchronous flip-flop input used to clear Q immediately to 0.

A. DC set

B. DC clear

C. DC reset

D. DC toggle

Solution:

98. A counter that counts from a maximum count downward to zero

A. Synchronous counter

B. Down counter

C. Up counter

D. Up/down counter

Solution:

99. Small circles on the input or output lines of logic circuit symbols which represent inversion of a particular signal.

A. Bootstrap

B. Bubble

C. Strobe

D. Clode

Solution:

100. A multiplexer is described by its size through ______, where n = number of bits.

A. n x 2n

B. 1 x 2n

C. 2n x 1

D. 2n x m

Solution:

Questions and Answers in Computer Fundamentals

Following is the list of multiple choice questions in this brand new series:

MCQ in Computer Fundamentals
PART 1: MCQs from Number 1 – 50                        Answer key: PART I
PART 2: MCQs from Number 51 – 100                   Answer key: PART II
PART 3: MCQs from Number 101 – 150                 Answer key: PART III
PART 4: MCQs from Number 151 – 200                 Answer key: PART IV
PART 5: MCQs from Number 201 – 250                 Answer key: PART V
PART 6: MCQs from Number 251 – 300                 Answer key: included
PART 7: MCQs from Number 301 – 350                 Answer key: included
PART 8: MCQs from Number 351 – 400                 Answer key: included
PART 9: MCQs from Number 401 – 450                 Answer key: included
PART 10: MCQs from Number 451 – 500                 Answer key: included

Complete List of MCQs in Electronics Engineering per topic

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