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Recent questions tagged tbb-digital-logic-2

2 votes

1 answer

1

Test by Bikram | Digital Logic | Test 2 | Question: 30
The excess $3$ code of decimal number $26$ is: $0100 1001$ $01011001$ $1000 1001$ $01001101$

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

945 views

3 votes

1 answer

2

Test by Bikram | Digital Logic | Test 2 | Question: 29
$1$’s complement representation of decimal number of -$17$ by using $8$ bit representation is: $1110 \ 1110$ $1101 \ 1101$ $1100 \ 1100$ $0001 \ 0001$

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

280 views

3 votes

1 answer

3

Test by Bikram | Digital Logic | Test 2 | Question: 28
If signed numbers are used in binary arithmetic, then which one of the following notations would have unique representation for zero? Sign-magnitude $1$’s complement $2$’s complement $9$’s complement

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

2.9k views

3 votes

1 answer

4

Test by Bikram | Digital Logic | Test 2 | Question: 27
Which among the following statements is TRUE? A circuit containing only OR and NOT gates must be a combinational circuit. SRAM is static in the sense that if the power is turned off, SRAM will continue to store data (e.g. ... in two's complement form, the negative of a number can be found by adding one and then inverting the bits.

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

677 views

2 votes

2 answers

5

Test by Bikram | Digital Logic | Test 2 | Question: 26
If the input to T-flip flop is $100$ Hz signal, the final output of the three T-flip flops in cascade is : $1000$ Hz $500$ Hz $333$ Hz $12.5$ Hz

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

806 views

3 votes

1 answer

6

Test by Bikram | Digital Logic | Test 2 | Question: 25
Consider a $7$-bit floating-point representation with $3$ bits for the excess-$3$ exponent and $3$ bits for the mantissa represented in normalized form. Then $0.375_{(10)}$ will be represented in this $7$-bit representation as _______. $0010011$ $0001100$ $0001101$ $0001010$

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

693 views

3 votes

1 answer

7

Test by Bikram | Digital Logic | Test 2 | Question: 24
Convert the following $(734 )_8 = ( \dots )_{16}$ $C \ 1 \ D$ $D \ C \ 1$ $1 \ C \ D$ $1 \ D \ C$

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

497 views

2 votes

1 answer

8

Test by Bikram | Digital Logic | Test 2 | Question: 23
Convert decimal $153$ to octal. Which of the following will be the equivalent in octal? $( 231)_8$ $( 331)_8$ $( 431)_8$ none of these

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

212 views

1 vote

2 answers

9

Test by Bikram | Digital Logic | Test 2 | Question: 22
Synchronous counters eliminate the delay problems encountered with asynchronous counters because: The input clock pulses are applied only to the first and last stages. The input clock pulses are applied only to the last stage. The ... used to activate any of the counter stages. The input clock pulses are applied simultaneously to each stage.

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

246 views

2 votes

3 answers

10

Test by Bikram | Digital Logic | Test 2 | Question: 21
On the fifth clock pulse, a $4$-bit Johnson sequence is $Q0 = 0, \ Q1 = 1, \ Q2 = 1$, and $Q3 = 1$. On the sixth clock pulse, the sequence is ________. $Q0 = 1, \ Q1 = 0, \ Q2 = 0, \ Q3 = 0$ $Q0 = 1, \ Q1 = 1, \ Q2 = 1, \ Q3 = 0$ $Q0 = 0, \ Q1 = 0, \ Q2 = 1, \ Q3 = 1$ $Q0 = 0, \ Q1 = 0, \ Q2 = 0, \ Q3 = 1$

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

872 views

4 votes

3 answers

11

Test by Bikram | Digital Logic | Test 2 | Question: 20
An eight stage ripple counter uses a flip-flop with propagation delay of $75$ nanoseconds. The pulse width of the strobe is $50$ ns. The frequency of the input signal which can be used for proper operation of the counter is approximately: $1.5$ MHz $500$ MHz $2$ MHz $4$ MHz

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

1.4k views

1 vote

1 answer

12

Test by Bikram | Digital Logic | Test 2 | Question: 19
How many select lines will a $32:1$ multiplexer have? $5$ $8$ $9$ $11$

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

190 views

1 vote

2 answers

13

Test by Bikram | Digital Logic | Test 2 | Question: 18
How many flip flops are required to construct a decade counter? $10$ $3$ $4$ $2$

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

330 views

1 vote

1 answer

14

Test by Bikram | Digital Logic | Test 2 | Question: 17
The device which changes from serial data to parallel data is: COUNTER MULTIPLEXER DEMULTIPLEXER FLIP-FLOP

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

532 views

2 votes

4 answers

15

Test by Bikram | Digital Logic | Test 2 | Question: 16
Karnaugh map is used for the purpose of: Reducing the electronic circuits used. Mapping the given Boolean logic function. Minimizing the terms in a Boolean expression. Maximizing the terms of a given a Boolean expression.

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

415 views

1 vote

1 answer

16

Test by Bikram | Digital Logic | Test 2 | Question: 15
The number of control lines for $16$ to $1$ multiplexer is ___. $2$ $4$ $3$ $5$

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

186 views

2 votes

1 answer

17

Test by Bikram | Digital Logic | Test 2 | Question: 14
DeMorgan’s first theorem shows the equivalence of: OR gate and Exclusive OR gate. NOR gate and Bubbled AND gate. NOR gate and NAND gate. NAND gate and NOT gate

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

313 views

1 vote

1 answer

18

Test by Bikram | Digital Logic | Test 2 | Question: 13
Which of the following combinations is sufficient to build a half adder? EX-OR gate and NOR gate. EX-OR gate and OR gate. EX-OR gate and AND gate. Four NAND gates.

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

216 views

2 votes

1 answer

19

Test by Bikram | Digital Logic | Test 2 | Question: 12
The decimal equivalent of hex number $1A53$ is: $6793$ $6739$ $6973$ $6379$

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

197 views

1 vote

1 answer

20

Test by Bikram | Digital Logic | Test 2 | Question: 11
In a JK Flip-Flop, “toggle” means: Set $Q = 1$ and $Q = 0$. Set $Q = 0$ and $Q = 1$. Change the output to the opposite state. No change in output.

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

197 views

17 votes

2 answers

21

Test by Bikram | Digital Logic | Test 2 | Question: 10
How many minimum number of two input AND gates and two input OR gates are required to realize $Y = BD+CE+AB$ ? $2, 2$ $4, 2$ $3, 2$ $2, 3$

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

1.1k views

1 vote

3 answers

22

Test by Bikram | Digital Logic | Test 2 | Question: 9
A 4-bit synchronous counter uses flip-flops with propagation delay times of $15$ ns each. The maximum possible time required for change of state will be _____. $15$ ns $30$ ns $45$ ns $60$ ns

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

467 views

1 vote

1 answer

23

Test by Bikram | Digital Logic | Test 2 | Question: 8
Shifting a register content to left by one bit position is equivalent to: Division by two. Addition by two. Multiplication by two. Subtraction by two.

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

238 views

2 votes

1 answer

24

Test by Bikram | Digital Logic | Test 2 | Question: 7
The following switching functions are to be implemented using a decoder: $f1= \sum m( 1, 2, 4, 8, 10,14 ), \ f2 = \sum m( 2,5, 9,11 ), \ f3 = \sum m( 2,4,5,6,7)$ The minimum configuration of the decoder should be: $2$ – to – $4$ line $3$ – to – $8$ line $4$ – to – $16$ line $5$ – to – $32$ line

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

413 views

2 votes

1 answer

25

Test by Bikram | Digital Logic | Test 2 | Question: 6
When simplified with Boolean Algebra, $(x + y)(x + z)$ simplifies to: $x$ $x + x(y + z)$ $x(1 + yz)$ $x + yz$

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

257 views

1 vote

1 answer

26

Test by Bikram | Digital Logic | Test 2 | Question: 5
The Boolean expression $ A \cdot B+ A \cdot B+ A \cdot B$ is equivalent to: $A + B$ $A \cdot B$ $A \oplus B$ $A \cdot B + A' B'$

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

195 views

1 vote

1 answer

27

Test by Bikram | Digital Logic | Test 2 | Question: 4
How many Flip-Flops are required for mod –$16$ counter? $5$ $6$ $3$ $4$

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

213 views

2 votes

1 answer

28

Test by Bikram | Digital Logic | Test 2 | Question: 3
What is the binary equivalent of the decimal number $368$? $101110000$ $110110000$ $111010000$ $111100000$

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

179 views

1 vote

1 answer

29

Test by Bikram | Digital Logic | Test 2 | Question: 2
The inputs of a NAND gate are connected together. The resulting circuit is ______. an OR gate an AND gate a NOT gate None of the above

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

407 views

2 votes

2 answers

30

Test by Bikram | Digital Logic | Test 2 | Question: 1
A minimum sum-of-products expression of the function $F(w, x, y,z) = \Sigma m ( 0, 2, 5, 8, 10, 13, 14 )$ using Karnaugh map is: $x'z+xy+yxz$ $x'z' + xy'z + wyz'$ $x'z' + xy'z + wyz$ $x'z' + xy'z' + wyz$

Bikram asked in Digital Logic Nov 26, 2016

by Bikram

329 views

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Recent questions tagged tbb-digital-logic-2