-
question_answer1)
A digital computer can memorize indefinitely
A)
only numerical data done
clear
B)
only non-numerical data done
clear
C)
both numerical and non-numerical data done
clear
D)
neither numerical nor non-numerical data done
clear
View Solution play_arrow
-
question_answer2)
Which of the following circuit converts a JK flip-flop to T flip-flop?
A)
B)
C)
D)
View Solution play_arrow
-
question_answer3)
Correction in decimal adder is required because
A)
sums are represented wrongly in binary code done
clear
B)
sums are represented wrongly in BCD code done
clear
C)
the numbers to be added are not represented in BCD code done
clear
D)
none of these done
clear
View Solution play_arrow
-
question_answer4)
The function of strobe pulse in digital system is
A)
to reset memory registers done
clear
B)
to check the functioning of a logic gate done
clear
C)
to avoid race problem done
clear
D)
to shift data in registers done
clear
View Solution play_arrow
-
question_answer5)
Which of the following is not a magnetic memory?
A)
Flip-flop done
clear
B)
Tape done
clear
C)
Drum done
clear
D)
Disk done
clear
View Solution play_arrow
-
question_answer6)
Registers and counters are similar in the sense that they both
A)
are made from an array of flip-flops and gates integrated on a single chip done
clear
B)
store binary information done
clear
C)
count pulses done
clear
D)
are, in fact, shift registers done
clear
View Solution play_arrow
-
question_answer7)
The number of comparator circuits required to build a three bit simultaneous A/D converter is
A)
7 done
clear
B)
8 done
clear
C)
15 done
clear
D)
16 done
clear
View Solution play_arrow
-
question_answer8)
What is the function of control unit in the CPU?
A)
Decoding of program instructions. done
clear
B)
Transfer of data to primary storage. done
clear
C)
Performing logical operations. done
clear
D)
Storage of program instructions. done
clear
View Solution play_arrow
-
question_answer9)
Which of the following logics has excellent noise margin?
A)
TTL done
clear
B)
ECL done
clear
C)
CMOS done
clear
D)
All of these done
clear
View Solution play_arrow
-
question_answer10)
Programmable Logic Array (PLA) uses
A)
ROM matrices done
clear
B)
FROM matrices done
clear
C)
RAM matrices done
clear
D)
Silo memory done
clear
View Solution play_arrow
-
question_answer11)
The output Y of the logic circuit given below is
A)
1 done
clear
B)
0 done
clear
C)
X done
clear
D)
x done
clear
View Solution play_arrow
-
question_answer12)
In the sum of products function f (X, Y, Z) = E (2,3,4,5), the prime implicates are
A)
XY, XY done
clear
B)
XY, XYZ, XYZ done
clear
C)
XYZ, XYZ, XY done
clear
D)
XYZ, XYZ, XYZ, XYZ done
clear
View Solution play_arrow
-
question_answer13)
A latch is _____ sensitive
A)
both level and edge done
clear
B)
edge done
clear
C)
level done
clear
D)
None done
clear
View Solution play_arrow
-
question_answer14)
How many bits are required to store one BCD digit?
A)
1 done
clear
B)
2 done
clear
C)
3 done
clear
D)
4 done
clear
View Solution play_arrow
-
question_answer15)
m binary number system the first digit (bit) from right to left is called as
A)
LSB, Least Significant Bit done
clear
B)
MSB, Most Significant Bit done
clear
C)
First Bit done
clear
D)
Last Bit done
clear
View Solution play_arrow
-
question_answer16)
A D-flip-flop is said to be transparent when
A)
The output is LOW done
clear
B)
The output is HIGH done
clear
C)
The output follows clock done
clear
D)
The output follows input done
clear
View Solution play_arrow
-
question_answer17)
Which of these sets of logic gates are designated as universal gates?
A)
NOR, NAND. done
clear
B)
XOR, NOR, NAND. done
clear
C)
OR, NOT, AND. done
clear
D)
NOR, NAND, XNOR. done
clear
View Solution play_arrow
-
question_answer18)
In the toggle mode a JK- flip-flop has
A)
J=0, K=0. done
clear
B)
J=1, K=1. done
clear
C)
J=0, K=1. done
clear
D)
J=1, K=0. done
clear
View Solution play_arrow
-
question_answer19)
Which of the following is a digital device?
A)
Regulator of a fan done
clear
B)
Microphone done
clear
C)
Resistance of a material done
clear
D)
Light switch done
clear
View Solution play_arrow
-
question_answer20)
If a Hexadecimal numbers needs to convert to binary. For each hexadecimal digit, there will be how many bits
A)
1 done
clear
B)
2 done
clear
C)
4 done
clear
D)
8 done
clear
View Solution play_arrow
-
question_answer21)
A three-state buffer has the following output states
A)
1, 0, float done
clear
B)
High, Low, Float done
clear
C)
Both A and B done
clear
D)
Set, Reset, Halt done
clear
View Solution play_arrow
-
question_answer22)
Temperature variation is a/an
A)
Digital quantity done
clear
B)
Analog quantity done
clear
C)
Either Digital or Analog quantity done
clear
D)
None done
clear
View Solution play_arrow
-
question_answer23)
In Digital Logic Designs, GAL is abbreviated as
A)
General Advance Logic done
clear
B)
General Array Logic done
clear
C)
Generic Advance Logic done
clear
D)
Generic Array Logic done
clear
View Solution play_arrow
-
question_answer24)
A digital circuit that can store on bit is a
A)
XOR gate done
clear
B)
flip-flop done
clear
C)
gate done
clear
D)
register done
clear
View Solution play_arrow
-
question_answer25)
If J=K(J and K are shorted) in a JK flip-flop, what circuit is made
A)
SR flip-flop done
clear
B)
Shorted JK flip-flop done
clear
C)
T flip-flop done
clear
D)
K flip-flop done
clear
View Solution play_arrow
-
question_answer26)
Which logic family provides minimum power dissipation
A)
TTL done
clear
B)
CMOS done
clear
C)
BCL done
clear
D)
JFET done
clear
View Solution play_arrow
-
question_answer27)
In a T flip-flop no of input circuit is
A)
1 done
clear
B)
2 done
clear
C)
3 done
clear
D)
4 done
clear
View Solution play_arrow
-
question_answer28)
A boolean function can be transformed into logical
A)
Graph done
clear
B)
Map done
clear
C)
Diagram done
clear
D)
Matrix done
clear
View Solution play_arrow
-
question_answer29)
In Boolean algebra A.A is equal to
A)
A done
clear
B)
A2 done
clear
C)
2A done
clear
D)
1 done
clear
View Solution play_arrow
-
question_answer30)
In Boolean algebra AND is represented by
A)
+ done
clear
B)
\[-\] done
clear
C)
/ done
clear
D)
\[\times \] done
clear
View Solution play_arrow
-
question_answer31)
Truth table is used to express
A)
Boolean expression done
clear
B)
Boolean map done
clear
C)
Boolean matrix done
clear
D)
Boolean addition done
clear
View Solution play_arrow
-
question_answer32)
The boolean algebra is mostly based on
A)
Boolean theorem done
clear
B)
De Morgans theorem done
clear
C)
D Morpans theorem done
clear
D)
Standard theorem done
clear
View Solution play_arrow
-
question_answer33)
A+\[\overline{A}\] is equal to
A)
A done
clear
B)
A done
clear
C)
0 done
clear
D)
1 done
clear
View Solution play_arrow
-
question_answer34)
Complement of XNOR and NOR is ___ and ____ respectively.
A)
NOR, XNOR done
clear
B)
OR, NOR done
clear
C)
XOR, NOR done
clear
D)
XOR, OR done
clear
View Solution play_arrow
-
question_answer35)
Convert the binary number (1111000011110000) to hexadecimal number
A)
1010 done
clear
B)
FOFO done
clear
C)
7070 done
clear
D)
5050 done
clear
View Solution play_arrow
-
question_answer36)
Positive integers must be represented by
A)
Signed numbers done
clear
B)
Unsigned number done
clear
C)
Both A and B done
clear
D)
None of these. done
clear
View Solution play_arrow
-
question_answer37)
EBCDIC is abbreviated as
A)
Extended Bit Coded Decimal Interchange Code done
clear
B)
Extended Binary Coded Dictation Interchange Code done
clear
C)
Extended Binary Color Decimal Interchange Code done
clear
D)
Extended Binary Coded Decimal Interchange Code done
clear
View Solution play_arrow
-
question_answer38)
A sequence of binary digits is known as
A)
Bit string done
clear
B)
Byte string done
clear
C)
Input string done
clear
D)
Word string done
clear
View Solution play_arrow
-
question_answer39)
Why decoder is used in the digital electronics?
A)
To convert coded information into non coded form done
clear
B)
To convert non coded information into coded form done
clear
C)
It is used to separate address bus and data bus done
clear
D)
None of the above done
clear
View Solution play_arrow
-
question_answer40)
How the digital signals is transmitted through a single conductor?
A)
Parallel done
clear
B)
Analog done
clear
C)
Serial done
clear
D)
None of the above done
clear
View Solution play_arrow
-
question_answer41)
How many input and output required for multiplexer?
A)
Many input and one output done
clear
B)
One input and many output done
clear
C)
One input and one output done
clear
D)
None of the above done
clear
View Solution play_arrow
-
question_answer42)
When will be the output of an AND gate is HIGH if there are three inputs, A, B, and C?
A)
A=0, B=0, C=0 done
clear
B)
A=1, B=1, C=0 done
clear
C)
A=1, B=O, C=1 done
clear
D)
A=1, B=1, C=1 done
clear
View Solution play_arrow
-
question_answer43)
Why small bubble is given on the output of the NAND gate symbol?
A)
Tristate done
clear
B)
Output is inverted done
clear
C)
Open collector output done
clear
D)
None of the above done
clear
View Solution play_arrow
-
question_answer44)
A quartz crystal oscillator consists of
A)
Only series resonant frequency. done
clear
B)
Only parallel resonant frequency. done
clear
C)
Both series and parallel frequencies. done
clear
D)
Neither series nor parallel frequency. done
clear
View Solution play_arrow
-
question_answer45)
Quantities whose values very with time are
A)
digital done
clear
B)
scalar done
clear
C)
analogue done
clear
D)
vetor done
clear
View Solution play_arrow