Multiple Choice Questions Topic Outline
- MCQs in analog and Digital System
- MCQs in Binary Number System
- MCQs in Boolean Algebra
- MCQs in Mathematical Logic and Switching Networks
- MCQs in Basic digital Circuits (logic gates, flip-flops, multivibrators, etc)
- MCQs in Static and dynamic Memory Devices
- MCQs in Programming and Machine Languages
- MCQs in Information and Acquisition Processing
- MCQs in Analog / Digital Conversion
- MCQs in Computer Networking
The Series
Following is the list of multiple choice questions in this brand new series:
Continue Practice Exam Test Questions Part 2 of the Series
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
Post a Comment
EmoticonClick to see the code!
To insert emoticon you must added at least one space before the code.