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Recent questions tagged digital-logic

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Recent questions tagged digital-logic

0 votes
1 answer
1
NIELIT 2017 OCT Scientific Assistant A (IT) - Section D: 9
A sequential circuit using D flip-flop and logic gates is shown in Figure, where $X$ and $Y$ are the inputs and $Z$ is the output. The circuit is $\text{S-R}$ Flip-flop with inputs $X = R$ and $Y=S$ $\text{S-R}$ ... $X = J$ and $Y=K$ $\text{J-K}$ Flip-flop with inputs $X = K$ and $Y=J$
A sequential circuit using D flip-flop and logic gates is shown in Figure, where $X$ and $Y$ are the inputs and $Z$ is the output. The circuit is $\text{S-R}$ Flip-flop with inputs $X = R$ and $Y=S$ $\text{S-R}$ Flip-flop with inputs $X = S$ and $Y=R$ $\text{J-K}$ Flip-flop with inputs $X = J$ and $Y=K$ $\text{J-K}$ Flip-flop with inputs $X = K$ and $Y=J$
asked Aug 28 in Digital Logic Lakshman Patel RJIT 200 views
0 votes
1 answer
2
NIELIT 2017 OCT Scientific Assistant A (IT) - Section D: 10
A $4$ bit ripple counter and a $4$ bit synchronous counter are made using flip-flops having a propagation delay of $10$ ns each. If the worst case delay in the ripple counter and the synchronous counter be $R$ and $S$ respectively, then $R = 10$ ns, $S = 40$ ns $R = 40$ ns, $S = 10$ ns $R = 10$ ns, $S = 30$ ns $R = 30$ ns, $S = 10$ ns
A $4$ bit ripple counter and a $4$ bit synchronous counter are made using flip-flops having a propagation delay of $10$ ns each. If the worst case delay in the ripple counter and the synchronous counter be $R$ and $S$ respectively, then $R = 10$ ns, $S = 40$ ns $R = 40$ ns, $S = 10$ ns $R = 10$ ns, $S = 30$ ns $R = 30$ ns, $S = 10$ ns
asked Aug 28 in Digital Logic Lakshman Patel RJIT 102 views
0 votes
1 answer
3
NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 9
A sequential circuit using D flip-flop and logic gates is shown in Figure, where $X$ and $Y$ are the inputs and $Z$ is the output. The circuit is $\text{S-R}$ Flip-flop with inputs $X = R$ and $Y=S$ $\text{S-R}$ ... $X = J$ and $Y=K$ $\text{J-K}$ Flip-flop with inputs $X = K$ and $Y=J$
A sequential circuit using D flip-flop and logic gates is shown in Figure, where $X$ and $Y$ are the inputs and $Z$ is the output. The circuit is $\text{S-R}$ Flip-flop with inputs $X = R$ and $Y=S$ $\text{S-R}$ Flip-flop with inputs $X = S$ and $Y=R$ $\text{J-K}$ Flip-flop with inputs $X = J$ and $Y=K$ $\text{J-K}$ Flip-flop with inputs $X = K$ and $Y=J$
asked Aug 28 in Digital Logic Lakshman Patel RJIT 103 views
0 votes
0 answers
4
NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 10
A $4$ bit ripple counter and a $4$ bit synchronous counter are made using flip-flops having a propagation delay of $10$ ns each. If the worst case delay in the ripple counter and the synchronous counter be $R$ and $S$ respectively, then $R = 10$ ns, $S = 40$ ns $R = 40$ ns, $S = 10$ ns $R = 10$ ns, $S = 30$ ns $R = 30$ ns, $S = 10$ ns
A $4$ bit ripple counter and a $4$ bit synchronous counter are made using flip-flops having a propagation delay of $10$ ns each. If the worst case delay in the ripple counter and the synchronous counter be $R$ and $S$ respectively, then $R = 10$ ns, $S = 40$ ns $R = 40$ ns, $S = 10$ ns $R = 10$ ns, $S = 30$ ns $R = 30$ ns, $S = 10$ ns
asked Aug 28 in Digital Logic Lakshman Patel RJIT 63 views
0 votes
1 answer
6
NIELIT 2017 OCT Scientific Assistant A (IT) - Section B: 19
In a ripple counter using edge-triggered $JK$ flip-flops, the pulse input is applied to Clock input of all flip-flops $J$ and $K$ input of one flip-flop $J$ and $K$ input of all flip-flops Clock input of one flip-flop
In a ripple counter using edge-triggered $JK$ flip-flops, the pulse input is applied to Clock input of all flip-flops $J$ and $K$ input of one flip-flop $J$ and $K$ input of all flip-flops Clock input of one flip-flop
asked Apr 1 in Unknown Category Lakshman Patel RJIT 52 views
0 votes
2 answers
9
NIELIT 2017 OCT Scientific Assistant A (CS) - Section C: 8
In a ripple counter using edge-triggered $JK$ flip-flops, the pulse input is applied to Clock input of all flip-flops $J$ and $K$ input of one flip-flop $J$ and $K$ input of all flip flops Clock input of one flip-flop
In a ripple counter using edge-triggered $JK$ flip-flops, the pulse input is applied to Clock input of all flip-flops $J$ and $K$ input of one flip-flop $J$ and $K$ input of all flip flops Clock input of one flip-flop
asked Apr 1 in Digital Logic Lakshman Patel RJIT 92 views
0 votes
1 answer
10
NIELIT 2017 OCT Scientific Assistant A (CS) - Section B: 1
A decimal has $25$ digits. The number of bits needed for its equivalent binary representation is approximately, $50$ $74$ $40$ $60$
A decimal has $25$ digits. The number of bits needed for its equivalent binary representation is approximately, $50$ $74$ $40$ $60$
asked Apr 1 in Digital Logic Lakshman Patel RJIT 111 views
3 votes
2 answers
11
NIELIT 2017 OCT Scientific Assistant A (CS) - Section B: 20
The possible number of Boolean function of $3$ variables $X,Y$ and $Z$ such that $f(X,Y,Z) = f(X’,Y’,Z’)$ $8$ $16$ $64$ $32$
The possible number of Boolean function of $3$ variables $X,Y$ and $Z$ such that $f(X,Y,Z) = f(X’,Y’,Z’)$ $8$ $16$ $64$ $32$
asked Apr 1 in Digital Logic Lakshman Patel RJIT 158 views
1 vote
3 answers
12
NIELIT 2017 DEC Scientific Assistant A - Section B: 16
The smallest integer that can be represented by an $8$-bit number in $2$'s complement form is : $-256$ $-128$ $-127$ $0$
The smallest integer that can be represented by an $8$-bit number in $2$'s complement form is : $-256$ $-128$ $-127$ $0$
asked Mar 31 in Digital Logic Lakshman Patel RJIT 149 views
0 votes
2 answers
13
NIELIT 2017 DEC Scientific Assistant A - Section B: 26
The number $(25)_6$, in base $6$ is equivalent to _________ in binary number system. $11001$ $10001$ $11000$ $10000$
The number $(25)_6$, in base $6$ is equivalent to _________ in binary number system. $11001$ $10001$ $11000$ $10000$
asked Mar 31 in Digital Logic Lakshman Patel RJIT 125 views
3 votes
10 answers
15
NIELIT 2016 MAR Scientist B - Section C: 1
Which of the following logic expression is incorrect? $1\oplus0=1$ $1\oplus1\oplus0=1$ $1\oplus1\oplus1=1$ $1\oplus1=0$
Which of the following logic expression is incorrect? $1\oplus0=1$ $1\oplus1\oplus0=1$ $1\oplus1\oplus1=1$ $1\oplus1=0$
asked Mar 31 in Digital Logic Lakshman Patel RJIT 569 views
1 vote
3 answers
16
NIELIT 2016 MAR Scientist B - Section C: 2
In which of the following adder circuits, the carry look ripple delay is eliminated? Half adder Full adder Parallel adder Carry-look ahead adder
In which of the following adder circuits, the carry look ripple delay is eliminated? Half adder Full adder Parallel adder Carry-look ahead adder
asked Mar 31 in Digital Logic Lakshman Patel RJIT 367 views
1 vote
2 answers
17
NIELIT 2016 MAR Scientist B - Section C: 3
The output of a sequential circuit depends on present inputs only past inputs only both present and past inputs present outputs only
The output of a sequential circuit depends on present inputs only past inputs only both present and past inputs present outputs only
asked Mar 31 in Digital Logic Lakshman Patel RJIT 236 views
1 vote
1 answer
18
NIELIT 2016 MAR Scientist B - Section C: 4
In a ripple counter using edge triggered $JK$ flip-flops, the pulse input is applied to the clock input of all flip-flops clock input of one flip-flop $J$ and $K$ inputs of all flip-flops $J$ and $K$ inputs of one flip flop
In a ripple counter using edge triggered $JK$ flip-flops, the pulse input is applied to the clock input of all flip-flops clock input of one flip-flop $J$ and $K$ inputs of all flip-flops $J$ and $K$ inputs of one flip flop
asked Mar 31 in Digital Logic Lakshman Patel RJIT 239 views
1 vote
1 answer
19
NIELIT 2016 MAR Scientist B - Section C: 5
A decimal number has $30$ digits. Approximately, how many digits would the binary representation have? $30$ $60$ $90$ $120$
A decimal number has $30$ digits. Approximately, how many digits would the binary representation have? $30$ $60$ $90$ $120$
asked Mar 31 in Digital Logic Lakshman Patel RJIT 288 views
0 votes
2 answers
20
NIELIT 2016 MAR Scientist B - Section C: 6
The result of the subtraction $FD​_{16} - ​88_{16​}$ is $75_{16}$ $65_{16}$ $5E_{16}$ $10_{16}$
The result of the subtraction $FD​_{16} - ​88_{16​}$ is $75_{16}$ $65_{16}$ $5E_{16}$ $10_{16}$
asked Mar 31 in Digital Logic Lakshman Patel RJIT 127 views
1 vote
3 answers
21
NIELIT 2016 MAR Scientist B - Section C: 7
How many RAM chips of size $(256K \times 1 \text{ bit})$ are required to build $1$M Byte memory? $8$ $10$ $24$ $32$
How many RAM chips of size $(256K \times 1 \text{ bit})$ are required to build $1$M Byte memory? $8$ $10$ $24$ $32$
asked Mar 31 in Digital Logic Lakshman Patel RJIT 226 views
0 votes
1 answer
22
NIELIT 2016 MAR Scientist B - Section C: 10
Disadvantage of dynamic RAM over static RAM is higher power consumption. variable speed. need to refresh the capacitor charge every once in two milliseconds. higher bit density.
Disadvantage of dynamic RAM over static RAM is higher power consumption. variable speed. need to refresh the capacitor charge every once in two milliseconds. higher bit density.
asked Mar 31 in Digital Logic Lakshman Patel RJIT 112 views
1 vote
5 answers
26
NIELIT 2016 DEC Scientist B (IT) - Section B: 45
Which will be the equation of simplification of the given K-map? $AB' + B'CD' + A'B'C'$ $AB' + A'B'D' + A'B'C'$ $B'D' + AB' + B'C'$ $B'D' + A'B'C' + AB'$
Which will be the equation of simplification of the given K-map? $AB' + B'CD' + A'B'C'$ $AB' + A'B'D' + A'B'C'$ $B'D' + AB' + B'C'$ $B'D' + A'B'C' + AB'$
asked Mar 31 in Digital Logic Lakshman Patel RJIT 235 views
1 vote
1 answer
28
NIELIT 2016 DEC Scientist B (IT) - Section B: 58
How many Addition and Subtraction are required if you perform multiplication of $5$ (Multiplicand) and $-30$(Multiplier) using Booth Algorithm? $2,1$ $1,2$ $1,1$ $2,2$
How many Addition and Subtraction are required if you perform multiplication of $5$ (Multiplicand) and $-30$(Multiplier) using Booth Algorithm? $2,1$ $1,2$ $1,1$ $2,2$
asked Mar 31 in Digital Logic Lakshman Patel RJIT 144 views
1 vote
2 answers
29
NIELIT 2016 DEC Scientist B (IT) - Section B: 59
The Decimal equivalent of the Hexadecimal number $(AC7B)​_{16​}$ is: $32564$ $44155$ $50215$ $43562$
The Decimal equivalent of the Hexadecimal number $(AC7B)​_{16​}$ is: $32564$ $44155$ $50215$ $43562$
asked Mar 31 in Digital Logic Lakshman Patel RJIT 114 views
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