Digital Logic MCQ Questions Answers Computer Engineering CSE


11) A multiplexer is also known as

a) coder

b) decoder

c) data selector

d) multivibrator

View Answer
Option – c)


12) Logic 1 in + ve logic system is represented by

a) zero level

b) lower voltage level

c) higher voltage level

d) negative voltage

View Answer
Option – c)


13) Which of the following circuit is called latch

a) AND circuit

b) NAND circuit

c) Flip-flop

d) ROM circuit

View Answer
Option – b)


14) How many full adders are needed to construct an m-bit parallel adder

a) m/2

b) m

c) m – 1

d) m + 1

View Answer
Option – b)


15) A gate in which all inputs must be low to get a high output is called a/an

a) inverter

b) NOR gate

c) AND gate

d) NAND gate

View Answer
Option – b)


16) Zero has two respresentation in

a) sign magnitude

b) 1’s complement

c) 2’s complement

d) both a and b

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Option – d)


17) Which of the following is termed as minimum error code?

a) Binary code

b) Gray code

c) Excess 3 code

d) Octal code

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Option – b)


18) Which of the following computers is least powerful?

a) Minicomputer

b) micro Computer

c) Main frame computer

d) Super computer

View Answer
Option – b)


19) The binary equivalent of the decimal number 0.4375 is

a) 0.0111

b) 0.1011

c) 0.1100

d) 0.1010

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Option – a)


20) If one of the input to _________ gate is inverted then it becomes an INHIBITOR .

a) AND

b) NAND

C) NOR

d) XOR

View Answer
Option – a)