MCQ in Computer Fundamentals Part 2 | ECE Board Exam

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

⇐ MCQ in Computer Fundamentals Part 1 | ECE Board Exam

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

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

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

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

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

A. Latch

B. Memory

C. Bistable multivibrator

D. ROM

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

57. Add the hex numbers 58 and 24.

A. 7C

B. 7D

C. C7

D. 2C

58. Add 3AF to 23C

A. BE5

B. 5EB

C. A3B

D. 101A

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

A. CPU

B. ALU

C. Microprocessor

D. ROM

60. How many inputs does a full adder have?

A. 2

B. 4

C. 8

D. 3

61. How many outputs does a full adder have?

A. 1

B. 2

C. 4

D. 8

62. How many inputs does a half adder have?

A. 1

B. 2

C. 3

D. 4

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

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

A. Controller

B. Buffer

C. Actuator

D. Accumulator

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

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

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

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

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

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

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

A. Monostable multivibrator

B. Astable multivibrator

C. Bistable multivibrator

D. Flip-flop

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

A. Dual slope

B. Bootstrap

C. Backplane

D. Cascade

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

A. Buffer

B. BCD counter

C. Ring counter

D. Ripple counter

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

75. A term synonymous with CLEAR in computer systems.

A. Reset

B. Set

C. Toggle

D. Load

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

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

A. ASCII

B. Mnemonic

C. Octets

D. Instruction

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

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

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

81. A technique often used to eliminate decoding spikes.

A. Wired-AND

B. Strobing

C. Tristate

D. Wired-NAND

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

A. Glitch

B. Strobe

C. Toggle

D. Clock

83. A single bit comparator is usually implemented using

A. Exclusive OR

B. NOR gate

C. Exclusive NOR

D. Wired-AND

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’

85. Data storage in a memory is termed as

A. writing

B. memorizing

C. loading

D. reading

86. Data retrieval from a memory is called

A. getting

B. accessing

C. reading

D. fetching

87. In BCD, the code 1111 is

A. letter F

B. A

C. 11

D. Invalid

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

A. 4

B. 8

C. 16

D. 32

89. Another name for a digital multiplexer is

A. data selector

B. compressor

C. encoder

D. decoder

90. An astable multivibrator has

A. one stable state

B. two stable states

C. no stable state

D. tristate

91. A bistable multivibrator has

A. one stable state

B. two stable states

C. no stable state

D. tristate

92. A monostable multivibrator has

A. one stable state

B. two stable states

C. no stable state

D. tristate

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

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

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

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

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

A. DC set

B. DC clear

C. DC reset

D. DC toggle

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

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

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

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Questions and Answers in Computer Fundamentals

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

Complete List of MCQ in Electronics Engineering per topic