Question No: 1
(Marks: 01) - Please choose the correct option
A. Continuous Quantity
B.
Digital
Quantity
C.
Discrete
Quantity
D.
Digital
& Discrete both
Question No: 2
(Marks: 01) - Please choose the correct option
The
Sum-of-Weights method can be used to convert a Binary number of any magnitude
to its equivalent.
A.
Hexadecimal representation
B.
Octal representation
D.
Binary representation
Question No: 3
(Marks: 01) - Please choose the correct option
In
Binary to Hexadecimal Conversion, the Binary string is divided into small
groups of ___________ starting from the least significant bit.
A.
1-bits
B.
2-bits
C.
3-bits
D.
4-bits
Question No: 4
(Marks: 01) - Please choose the correct option
F
in Hexadecimal is equivalent to ___________ in binary.
B.
1011
C.
0011
D.
0000
Question No: 5
(Marks: 01) - Please choose the correct option
The
Boolean expression of AND gate is ___________
B.
Y = A+B
C.
Y = A-B
D.
Y = A/B
Question No: 6 (Marks: 01) - Please choose the correct
option
The
logic NOR function is the combination of two logic functions that are
___________logics.
B.
AND & NOT
C.
OR & AND
D.
NOT & XOR
Question No: 7
(Marks: 01) - Please choose the correct option
The
output of a NAND is ___________ when all inputs to the NAND gate are 1s.
A.
1
B.
00
C.
10
D.
0
Question No: 8
(Marks: 01) - Please choose the correct option
Demorgan’s
First Theorem states that the complement of a ___________ of variables is equal
to the sum of the complements of the variables.
A.
Sum
B.
Subtraction
C.
Product
D.
Division
Question No: 9
(Marks: 01) - Please choose the correct option
The
simplified Boolean expression of this logic circuit is:
A.
F = A.B.C.D
B.
F = A+B+C+D
D.
F = A.B.C+D
Question No: 10
(Marks: 01) - Please choose the correct option
A
4-variable K-Map has an array of ___________ cells
A.
8
B.
16
C.
24
D.
32
Question No: 11 (Marks:
01) - Please choose the correct option
A K-map for ___________ variables can be constructed by using two 4-variable
K-maps.
A.
5
B.
8
C.
15
D.
30
Question No: 12
(Marks: 01) - Please choose the correct option
A
standard way to express a Boolean expression is the ___________ form.
A.
POS
B.
SOS
C.
POP
Question No: 13
(Marks: 01) - Please choose the correct option
XOR
and ___________ gates are used to
implement the Odd-Parity Generator Circuit
A.
OR
C.
NOR
D.
NAND
Question No: 14
(Marks: 01) - Please choose the correct option
The
2’s complement of any number is obtained by taking the 1’s complement of a
number and then ___________ a 1 to the
1’s complement.
B.
Subtracting
C.
Multiplying
D.
Dividing
Question No: 15
(Marks: 01) - Please choose the correct option
The
basic function of a Comparator is to ___________ two binary quantities.
A.
Multiply & Divide
B.
Compare
C.
Subtract
D.
Add
Question No: 16
(Marks: 01) - Please choose the correct option
The
Decimal-to-BCD Encoder has ___________ inputs, for the decimal digits 0 to 9
and four outputs corresponding to the 4-bit BCD output.
A.
Two
B.
Eight
C.
Ten
D.
Sixteen
Question No: 17
(Marks: 01) - Please choose the correct option
Demultiplexer
has a single input and ___________ outputs.
A.
Two
B.
Three
C.
Four
D.
Several
Question No: 18
(Marks: 01) - Please choose the correct option
In
this figure of Standard PAL Numbering, 8 at the last indicates
A.
Eight Inputs
C.
Eight bits
D.
Eight Decimals
Question No: 19
(Marks: 01) - Please choose the correct option
ABEL
Symbol for Logic operation OR is
A.
!
B.
&
D.
$
Question No: 20
(Marks: 01) - Please choose the correct option
A.B
in boolean notation is equivalent to ___________ in ABEL notation.
A.
!A
C.
A#B
D.
A$B
Question No: 21 (Marks:
01) - Please choose the correct option
Why latches are called memory devices?
A.
It
can store 8 bits of data
B.
It
has an internal memory of 4 bit
C.
It can store one bit of data
D.
It
can store an infinite amount of data
Question No: 22
(Marks: 01) - Please choose the correct option
Does the NAND latch work when both inputs
are ___________?
A.
1
B.
0
C.
Inverted
D.
Don’t
care
Question No: 23
(Marks: 01) - Please choose the correct option
The truth table for an S-R flip-flop has
how many VALID entries?
A.
1
B.
2
C. 3
D.
4
Question No: 24
(Marks: 01) - Please choose the correct option
Does the basic latch consist of
___________?
A.
Two inverters
B.
Two
comparators
C.
Two
amplifiers
D.
Two
adders
Question No: 25
(Marks: 01) - Please choose the correct option
In D flip-flop, D stands for _____________?
A.
Distant
B.
Data
C.
Desired
D.
Delay
Question No: 26
(Marks: 01) - Please choose the correct option
How many stable states do combinational
circuits have?
A.
3
B.
4
C.
5
D.
2
Question No: 27
(Marks: 01) - Please choose the correct option
In the serial shifting method, data
shifting occurs ____________?
A.
One bit at a time
B.
Two-bit
at a time
C.
Four
bit at a time
D.
simultaneously
Question No: 28 (Marks: 01) - Please choose the correct
option
The full form of SIPO is _________________?
A.
Serial-in Parallel-out
B.
Parallel-in
Serial-out
C.
Serial-in
Serial-out
D.
Serial-In
Peripheral-Out
Question No: 29
(Marks: 01) - Please choose the correct option
The group of bits 10110111 is serially
shifted (right-most bit first) into an 8-bit parallel output shift register
with an initial state of 11110000. After two clock pulses, the register
contains ______________?
A.
10111000
B.
10110111
C.
11110000
D. 11111100
Question No: 30
(Marks: 01) - Please choose the correct option
What type of register would have a complete
binary number shifted in one bit at a time and have all the stored bits shifted
out one at a time?
A.
Parallel-in
Parallel-out
B.
Parallel-in
Serial-out
C. Serial-in Serial-out
D.
Serial-in
Parallel-out
Question No: 31
(Marks: 01) - Please choose the correct option
What is the function of a buffer circuit?
A.
To
provide an output that is inverted from that of the input
B. To provide an output that is equal to its
input
C.
To
clean up the input
D.
To
clean up the output
Question No: 32
(Marks: 01) - Please choose the correct option
Which of the following has the lowest
access time?
A.
RAM
B.
ROM
C.
Flag
D. Registers
Question No: 33
(Marks: 01) - Please choose the correct option
Logic circuits can also be designed using
_________?
A.
RAM
B.
ROM
C.
PLA
D. PLD
Question No: 34
(Marks: 01) - Please choose the correct option
If enable input is high, then the
multiplexer is _________?
A.
Disable
B. Enable
C.
High
Impedance
D.
Saturation
Question No: 35
(Marks: 01) - Please choose the correct option
A shift register is defined as _________?
A. The register is capable of shifting
information either to the right or to the left
B.
The
register is capable of shifting information to another register
C.
The
register is capable of shifting information to the left only
D.
The
register is capable of shifting information to the right only
Question No: 36
(Marks: 01) - Please choose the correct option
Which circuit is generated from D flip-flop
due to the addition of an inverter by causing the reduction in the number of
inputs?
A.
Gated
D-latch
B. Gated T-latch
C.
Gated
JK-latch
D.
Gated
SR-latch
Question No: 37
(Marks: 01) - Please choose the correct option
When a high is applied to the set line of
an SR latch, then________?
A. Q output goes high
B.
Q
output goes low
C.
Q`
output goes high
D.
Both
Q and Q` go high
Question No: 38
(Marks: 01) - Please choose the correct option
D flip-flop is a circuit having ________?
A.
5
NAND gates
B. 4 NAND gates
C.
3
NAND gates
D.
2
NAND gates
Question No: 39
(Marks: 01) - Please choose the correct option
What is a state diagram?
A.
It
provides the same information as the state table
B.
It
is similar to the characteristic equation
C. It provides a graphical representation of
states
D.
It
is the same as the truth table
Question No: 40
(Marks: 01) - Please choose the correct option
How many different states do a 3-bit
asynchronous down counter have?
A.
4
B.
6
C. 8
D.
2