Recent questions tagged digital-circuits

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ISRO2020-66
The following circuit compares two $2$-bit binary numbers, $X$ and $Y$ represented by $X_1X_0$ and $Y_1Y_0$ respectively. ($X_0$ and $Y_0$ represent Least Significant Bits) Under what conditions $Z$ will be $1$? $X>Y$ $X<Y$ $X=Y$ $X!=Y$

asked Jan 13 in Digital Logic by Satbir Boss (23.9k points) | 262 views

+2 votes

1 answer

2

Logic Gates and switching circuits
The gates G1 & G2 in the figure have propagation delays of 10ns and 20ns respectively. If the input Vi makes an abrupt change from logic 0 to 1 at time t=t0 , then what's the output waveform V0 is ? Also please explain how to handle such kinds of questions of waveform?

asked Jun 14, 2019 in Digital Logic by Gitika Babbar (157 points) | 288 views

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4 answers

3

Minimization doubt in DIGITAL LOGIC

asked Jun 14, 2019 in Digital Logic by Gitika Babbar (157 points) | 118 views

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0 answers

4

Morris Mano Edition 3 Exercise 9 Question 2 (Page No. 392)
Derive a transition table for the asynchronous sequential circuit given in the figure. Determine the sequence of the internal states $y _1Y _2$ for the following sequence of the input $x _1x _2$: 00,10,11,01,11,10,00.

asked Apr 7, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 14 views

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0 answers

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Morris Mano Edition 3 Exercise 7 Question 30 (Page No. 305)
Show the circuit and the timing diagram for generating six repeated timing signals, $T _0$ through $T _5$.

asked Apr 6, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 9 views

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0 answers

6

Morris Mano Edition 3 Exercise 5 Question 4 (Page No. 197)
The adder-subtractor circuit of figure has the following values for mode input M and data inputs A and B. In each case, determine the values of the outputs: $S _ 4 S _3 S _2 S _1$ and $C _5$. M A B 0 0111 0110 0 1000 1001 1 0101 1000 1 0000 1010

asked Apr 3, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 133 views

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7

Morris Mano Edition 3 Exercise 5 Question 3 (Page No. 197)
The adder-subtractor of the figure is used to subtract the following unsigned 4-bit number: 0110 – 1001(6 – 9) What are the binary values in the nine inputs of the circuit $?$ what are the binary values of the five outputs of the circuit$?$ Explain How the output is related to the operation of 6 – 9.

asked Apr 3, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 34 views

+1 vote

0 answers

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Morris Mano Edition 3 Exercise 5 Question 2 (Page No. 197)
Construct a BCD-to-Excess-3-code converter with a 4-bit adder.remember that the Excess-3 code digits obtained by adding 3 to the corresponding BCD Digit. what must be done to change the circuit to an excess-3-to-BCD-code converter

asked Apr 3, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 39 views

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0 answers

9

Morris Mano Edition 3 Exercise 4 Question 28 (Page No. 151)
Design a combinational Circuit that converts a 4-bit gray code number to a 4-bit straight binary number. Implement the circuit with Exclusive OR gates.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 19 views

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0 answers

10

Morris Mano Edition 3 Exercise 4 Question 29 (Page No. 151)
Design a circuit of a three-bit parity generator and the circuit of the four-bit parity checker using an odd parity bit.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 11 views

+1 vote

0 answers

11

Morris Mano Edition 3 Exercise 4 Question 30 (Page No. 151)
Manipulate the following Boolean Expression in such a way so that it can be implemented using exclusive-OR and AND gates only. $AB’CD’ + A’BCD’ + AB’C’D + A’BC’D$

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 11 views

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0 answers

12

Morris Mano Edition 3 Exercise 4 Question 20 (Page No. 151)
Convert the logic diagram of the code converter shown in the figure to a multilevel NAND gate Circuits

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 16 views

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0 answers

13

Morris Mano Edition 3 Exercise 4 Question 19 (Page No. 151)
Draw the NAND Gate Logic Diagram for each of the following Expressions using multilevel NAND gate Circuits. (AB’ + CD’)E + BC(A + B) w(x + y + z) + xyz

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 6 views

+1 vote

1 answer

14

Morris Mano Edition 3 Exercise 4 Question 16 (Page No. 150)
A BCD to seven segment decoder is a combinational circuit that converts a decimal digit in BCD to an appropriate code for the selection of the segments in the display indicator used for displaying the decimal digit in the ... decoder using the minimum number of the NAND gates. the Six invalid combinations should result in a blank display.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 32 views

0 votes

0 answers

15

Morris Mano Edition 3 Exercise 4 Question 15 (Page No. 150)
Design a combinational Circuit that converts a binary number of 4-bits to decimal number in BCD. Note that the BCD number is the same as the binary number as long as the digit is 9 or less than 9. binary numbers from 1010 to 1111 converts into BCD numbers from 1 0000 to 1 0101.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 23 views

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0 answers

16

Morris Mano Edition 3 Exercise 4 Question 14 (Page No. 150)
Design a combinational Circuit that can convert a decimal digit from the 2 -4- 2- 1 code to the 8 -4- 2- 1.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 8 views

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0 answers

17

Morris Mano Edition 3 Exercise 4 Question 13 (Page No. 149)
Design a code converter that converts a decimal digit from 8 -4- 2 -1 code to BCD.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 12 views

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0 answers

18

Morris Mano Edition 3 Exercise 4 Question 12 (Page No. 149)
Design a combinational circuit that detects an error in the representation of a decimal digit in BCD. The output of the circuit must be equal to logic -1 when the input contains any one of the six unused bit combinations in the BCD code.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 19 views

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0 answers

19

Morris Mano Edition 3 Exercise 4 Question 11 (Page No. 149)
Design a combinational Circuit with the four inputs and four outputs.The output generates the 2’s complement of the input number.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 16 views

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0 answers

20

Morris Mano Edition 3 Exercise 4 Question 10 (Page No. 149)
Design a combinational Circuit with four inputs that represent a decimal digit in BCD and the four outputs that Produce the 9’s complement of the input digit. Six unused combinations can be treated as Don’t care conditions.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 27 views

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0 answers

21

Morris Mano Edition 3 Exercise 4 Question 7 (Page No. 149)
Design a combinational Circuit with four inputs that represent a decimal digit in BCD and the four outputs that Produce the 9’s complement of the input digit. Six unused combinations can be treated as Don’t care conditions.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 11 views

0 votes

0 answers

22

Morris Mano Edition 3 Exercise 4 Question 9 (Page No. 149)
Design a combinational circuit with three inputs and six outputs. The output binary number should be the square of the input binary numbers.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 28 views

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0 answers

23

Morris Mano Edition 3 Exercise 4 Question 8 (Page No. 149)
Show that a Full-subtractor can be constructed with two half-subtractor and an OR gate.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 5 views

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0 answers

24

Morris Mano Edition 3 Exercise 4 Question 7 (Page No. 149)
Design a combinational Circuit that multiplies two-bit numbers $a _1a _0$ and $b _1b _0$, to produce a four-bit product, $c _3c _2c _1c _0$. Use AND gates and Half Adders

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 5 views

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25

Morris Mano Edition 3 Exercise 4 Question 6 (Page No. 149)
A combination circuit produces the binary sum of two bits numbers, $x _1x _0$ and $y _1 y _0$. the outputs are C, $S _1 $ and $S _0$. Design a combinational Circuit of problem using two full adders.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 8 views

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0 answers

26

Morris Mano Edition 3 Exercise 4 Question 5 (Page No. 149)
A combinational circuit produces the binary sum of 2-bit numbers, $x _1x _0 and y _1y _0$. the outputs are C. s1. and s0. Provide the truth table of the combinational circuit

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 11 views

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27

Morris Mano Edition 3 Exercise 4 Question 4 (Page No. 149)
Design a combinational circuit that adds 1 to a 4-bit binary number, $ A _3A _2A _1A _0$. For example, if the input of the circuit is, $ A _3A _2A _1A _0$ = 1101, the output is 1110, The circuit can be designed using 4 Half Adder.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 6 views

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0 answers

28

Morris Mano Edition 3 Exercise 4 Question 3 (Page No. 149)
A majority function is generated in the combinational circuit when the output is equal to 1. the input variable has more than 1’s than 0’s. The output is zero otherwise. Design a three input majority function.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 30 views

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0 answers

29

Morris Mano Edition 3 Exercise 4 Question 2 (Page No. 113)
Design a combinational Circuit with three inputs x, y, and z, and the three outputs A, B, and C. When the binary input is 0,1,2 or 3. the binary output is one greater than the input. When binary input is 4, 5, 6 or 7, the binary output is one less than the input.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 8 views

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0 answers

30

Morris Mano Edition 3 Exercise 4 Question 1 (Page No. 113)
Design a combination circuit with three inputs one output. the output is equal to logic-1 when the binary value of the input is less than 3. The output is logic-0 otherwise.

asked Apr 2, 2019 in Digital Logic by ajaysoni1924 Boss (10.8k points) | 18 views

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