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Q.1
Which is the correct order of sequence for representing the input values in K-map?
(00, 01, 10, 11)
(00, 10, 01, 11)
(00, 01, 11, 10)
(00, 10, 11, 01)
Q.2
The inputs of a NAND gate are connected together. The resulting circuit is ___________.
OR gate
AND gate
NOT gate
None of the above
Q.3
Digital computers are more widely used as compared to analog computers, because they are
Less expensive
Always more accurate and faster
Useful over wider ranges of problem types
Easier to maintain
Q.4
A NAND gate is called a universal logic element because
It is used by everybody
Any logic function can be realized by NAND gates alone
All the minization techniques are applicable for optimum NAND gate realization
Many digital computers use NAND gates.
Q.5
NAND. gates are preferred over others because these
have lower fabrication area
can be used to make any gate
consume least electronic power
provide maximum density in a chip.
Q.6
Consider the representation of six-bit numbers by two’s complement, one’s complement, or by sign and magnitude: In which representation is there overflow from the addition of the integers 011000 and 011000?
Two’s complement only
Sign and magnitude and one’s complement only
Two’s complement and one’s complement only
All three representations
Q.7
Excess-3 code is known as
Weighted code
Cyclic redundancy code
Self-complementing code
Algebraic code
Q.8
The number 10000 would appear just immediately after
FFFF (hex)
1111 (binary)
7777 (octal)
All of the above
Q.9
The only function of NOT gate is to ___________.
Stop signal
Invert input signal
Act as a universal gate
None of the above
Q.10
Which of the following gate is a two-level logic gate
OR gate
NAND gate
EXCLUSIVE OR gate
NOT gate
Q.11
When an input signal 1 is applied to a NOT gate, the output is ___________.
0
1
Either 0 & 1
None of the above
Q.12
Storage of 1 KB means the following number of bytes
1000
964
1024
1064
Q.13
The binary number 10101 is equivalent to decimal number ___________.
19
12
27
21
Q.14
Assuming 8 bits for data, 1 bit for parity, I start bit and 2 stop bits, the number of characters that 1200 BPS communication line can transmit is.
10 CPS
120 CPS
12 CPS
None of the above
Q.15
"What would happen, if smaller logic modules are utilized for performing logical functions associated with FPGA?
A. Propagation delay will increase
B. FPGA area will increase
C. Wastage of logic modules will not be prevented
D. Number of interconnected paths in device will decrease
"
A & B
C & D
A & D
B & C
Q.16
A debouncing circuit is
An astable MV
A bistable MV
A latch
A monostable MV
Q.17
The number of Boolean functions that can be generated by n variables is equal to
2
n
2
2
n
2
n-1
2
n
Q.18
Which mechanism allocates the binary value to the states in order to reduce the cost of the combinational circuits?
State Reduction
State Minimization
State Assignment
State Evaluation
Q.19
An AND gate will function as OR if
All the inputs to the gates are “1”
All the inputs are ‘0’
Either of the inputs is “1”
All the inputs and outputs are complemente'
Q.20
Which type of CPLD packaging can provide maximum number of pins on the package due to small size of the pins?
PLCC
QFP
PGA
BGA
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