The Gateway to Computer Science Excellence
For all GATE CSE Questions
Toggle navigation
GATE Overflow
Facebook Login
Google Login
or
Email or Username
Password
Remember
Login
Register

I forgot my password
All Activity
Questions
Unanswered
Tags
Subjects
Users
Ask
Previous
Blogs
New Blog
Exams
First time here? Checkout the
FAQ
!
x
×
Close
Use the google search bar on side panel. It searches through all previous GATE/other questions. For hardcopy of previous year questions please see
here
Recent questions tagged adder
0
votes
1
answer
1
Sums on Adder
$1)$3bit ripple adder, which adds two 3bit numbers, is designed using AND, OR, NOT, NAND, NOR gates only. Assuming that all the inputs are available in both complemented and uncomplemented forms and the delay of each gate is one time unit, what ... complemented and uncomplemented forms and the delay of each gate is one time unit, what is the overall propagation delay of the adder?
asked
Aug 30
in
Digital Logic
by
srestha
Veteran
(
96k
points)

83
views
digitallogic
adder
0
votes
1
answer
2
Adder delay
A full adder circuit takes 20 ns to generate the carryout bit and 40 ns for the sum bit. When 4, 1 bit full adders are cascaded, the maximum rate of additions per second will be $\text{____} \times 10^6 $sec. Usual Solution given The ... calculate the total time taken to perform one round of four bit addition. Right? (Similar old question: https://gateoverflow.in/83500/digitals)
asked
Aug 19
in
Digital Logic
by
GateAspirant999
Active
(
2.7k
points)

46
views
digitallogic
adder
combinational
digitalcircuits
0
votes
0
answers
3
Doubt
How to check whether there is overflow in nbit parallel adder?
asked
Aug 3
in
Digital Logic
by
aditi19
Junior
(
695
points)

33
views
adder
0
votes
0
answers
4
doubt
How to Calculate Propagation Delay In Carry Look Ahead Adder.
asked
Jul 18
in
Digital Logic
by
bhavnakumrawat5
(
151
points)

28
views
carry
look
ahead
adder
0
votes
0
answers
5
Minimum number of nand or nor gates for 2 bit adder.
asked
Jul 3
in
Digital Logic
by
adil.wadood
(
7
points)

95
views
digitallogic
adder
combinational
nand
nor
0
votes
1
answer
6
Test series
Consider a $3bit$ number $A$ and $2 bit$ number $B$ are given to a multiplier. The output of multiplier is realized using $AND$ gate and onebit full adders. If the minimum number of $AND$ gates required are $X$ and onebit full adders required are Y, then $X+Y = $ _______
asked
May 31
in
Digital Logic
by
saumya mishra
Active
(
1.3k
points)

95
views
digitallogic
multiplier
adder
fulladder
0
votes
1
answer
7
gate 2004
A $4 \hspace{0.1cm} bit$ carry lookahead adder which add two $4$ $bit$ number is designed using $AND ,OR,NOT,NAND,NOR$ gates only.Assuming that all the inputs are available in both complemented and uncomplemented form and the delay of each gate is one time ... is if we take same $4$ $bit$ number instead of lookahead adder if we take parallel adder what will be overall propagation delay??
asked
May 27
in
Digital Logic
by
BASANT KUMAR
Active
(
1.6k
points)

73
views
digitallogic
adder
0
votes
1
answer
8
Adder
One ripple carry adder is adding two nbit integers. The time complexity to perform addition using this adder is (We know carry look ahead adder takes time log n. Is it similar for other adders too). Plz also share some good resource about these two adders
asked
May 21
in
Digital Logic
by
srestha
Veteran
(
96k
points)

54
views
digitallogic
carrygenerator
adder
+2
votes
0
answers
9
Digital Logic
Please elaborate your answer.
asked
Jan 9
in
Digital Logic
by
gauravkc
Loyal
(
6.4k
points)

53
views
digitallogic
adder
0
votes
0
answers
10
CLA and RCA delays.
How to analyse the delays of Ripple carry adder and Carry look ahead adder. Please explain with Example.
asked
Dec 30, 2017
in
Digital Logic
by
AnilGoudar
Active
(
4.5k
points)

66
views
digitallogic
carrygenerator
adder
+3
votes
0
answers
11
Modified GATE 2003 question
Consider this GATE 2003 question: https://gateoverflow.in/937/gate200346 Here, instead of XOR gates we had OR gates, then which of the following operations can we perform? $A + B, A  B\ and\ A + 1$
asked
Nov 3, 2017
in
CO & Architecture
by
Rishabh Gupta 2
Boss
(
14.5k
points)

143
views
gate2003
adder
+2
votes
0
answers
12
GATE2003
asked
Oct 22, 2017
in
Digital Logic
by
chetan raghav
(
99
points)

61
views
full
adder
+2
votes
1
answer
13
Digital Systems  Help building a 4 bit Binary adder circuit
asked
Oct 2, 2017
in
Digital Logic
by
Garrett McClure
(
443
points)

283
views
digitallogic
gate
digitalcircuits
adder
halfadder
+1
vote
0
answers
14
made easy book
If the carry propogation delay is 5 in full adder then multiplication of 8 bit number using comultiplier takes(Assume AND gate delay=2)
asked
Sep 17, 2017
in
Digital Logic
by
nikkey123
Active
(
1.5k
points)

66
views
digitallogic
adder
+1
vote
2
answers
15
Which expression is right with respect to carry look header?
asked
Sep 7, 2017
in
Digital Logic
by
hem chandra joshi
Active
(
4.5k
points)

108
views
adder
carrygenerator
0
votes
1
answer
16
adder
This is binary to radix 12 circuit, how?
asked
Aug 31, 2017
in
Digital Logic
by
Sunil8860
(
121
points)

116
views
digitallogic
adder
+5
votes
4
answers
17
ISRO201724
When two $n$bit binary numbers are added the sum will contain at the most $n$ bits $n + 2$ bits $n + 3$ bits $n + 1$ bits
asked
May 7, 2017
in
Digital Logic
by
sh!va
Boss
(
34.5k
points)

3.2k
views
isro2017
digitallogic
adder
+1
vote
1
answer
18
Adder
asked
Jan 4, 2017
in
Digital Logic
by
vaishali jhalani
Loyal
(
5.8k
points)

332
views
digitallogic
adder
0
votes
1
answer
19
Digital: Carry Look Ahead Adder
Que: For Standard 4 bit [Where LSB bit consider at 0th & MSB Consider at 3rd position] carry look ahead adder, what is then fanin of OR gate whose output is C3____? Given Answer: 5 My answer: 4 C3=P2P1P0C0 + P2P1G0 + P2G1 + G2 as Ci+1= PiCi + Gi Please check!
asked
Dec 24, 2016
in
Digital Logic
by
Vijay Thakur
Boss
(
17k
points)

256
views
digitallogic
adder
combinational
0
votes
0
answers
20
GATE19884ii
Using binary full adders and other logic gates (if necessary), design an adder for adding 4bit number (including sign) in 2’s complement notation.
asked
Dec 19, 2016
in
Digital Logic
by
jothee
Veteran
(
101k
points)

127
views
gate1988
digitallogic
descriptive
adder
0
votes
0
answers
21
full adder
Can anyone explain me this theory with an example(from the third line)...??
asked
Dec 14, 2016
in
Digital Logic
by
Anmol Verma
Active
(
1.4k
points)

75
views
digitallogic
adder
combinational
0
votes
1
answer
22
virtual gate
Which of the following statements is/are true? S1: Carry lookahead adder is faster compared to a ripple carry adder. S2: The cost is higher for a carry lookahead adder compared to a ripple carry adder. (A) S1 only (B) S2 only (C) Both (D) None of these
asked
Dec 8, 2016
in
Digital Logic
by
Tendua
Boss
(
15.9k
points)

170
views
virtualgate
digitallogic
adder
+15
votes
1
answer
23
GATE19901i
Fill in the blanks: In the two bit fulladder/subtractor unit shown in below figure, when the switch is in position $2$ ___________ using _________ arithmetic.
asked
Nov 18, 2016
in
Digital Logic
by
makhdoom ghaya
Boss
(
40.2k
points)

848
views
gate1990
digitallogic
adder
0
votes
0
answers
24
GATE19873a
Design an $8 \times 8$ multiplier using five 4bits adders and 4 ROM's each programmed to realise $4 \times 4$ multiplier.
asked
Nov 12, 2016
in
Digital Logic
by
makhdoom ghaya
Boss
(
40.2k
points)

118
views
gate1987
digitallogic
adder
+1
vote
0
answers
25
Online resource
Can anyone explained me how gate delay is calculated in this link http://iitkgp.vlab.co.in/?sub=38&brch=120&sim=483&cnt=664 According me for 32 bit ripple carry adder, gate delay = (321) Pcarry + Psum Now Pcarry = 1EXOR + 1AND + 1OR = 3 gate delay and Psum = 1EXOR + 1EXOR = 2 gate delay so gate delay = 31*3 + 2 = 95 but given is 65
asked
Oct 20, 2016
in
Digital Logic
by
Digvijaysingh Gautam
Loyal
(
9k
points)

121
views
adder
+1
vote
1
answer
26
Made Easy: Digital Logic: Parallel Adder Delay
asked
Oct 20, 2016
in
Digital Logic
by
Vijay Thakur
Boss
(
17k
points)

530
views
digitallogic
combinational
digitalcircuits
adder
madeeasytestseries
+1
vote
3
answers
27
Carry look ahead adder delay
How many gate delays are needed to add for increase of level in multilevel carry look ahead adder? (A) 2 gate delays (B) 3 gate delays (C) 4 gate delays (D) 5 gate delays I really didnt get what it is meant by "to add ... calculating Px and Gx two stages of internal logic for calculating carry one stage calculating final sum So should the answer be 4 gate delays?
asked
Oct 16, 2016
in
Operating System
by
GateAspirant999
Active
(
2.7k
points)

443
views
digitallogic
adder
+8
votes
2
answers
28
Booth vs Add&SHIFT Calculation?
We want to multiply two 32 bit unsigned numbers 70E5F867 * EFB70E1E. . how many add operation is needed in ADDshift and Booth method? Any idea how I can solve this? the solution give a 20 and 6.
asked
Jul 28, 2016
in
CO & Architecture
by
Sara Nimlon
(
159
points)

713
views
coandarchitecture
boothsalgorithm
adder
+2
votes
2
answers
29
UGCNETDec2013II40
Which of the following statements are true? A circuit that adds two bits, producing a sum bit and carry bit is called half adder A circuit that adds two bits, producing a sum bit and carry bit is called full adder A circuit that adds two bits and a carry bit ... as input and produces its complement is called an inverter I & II II & III I, II, III I, III & IV
asked
Jul 26, 2016
in
Digital Logic
by
jothee
Veteran
(
101k
points)

386
views
ugcnetdec2013ii
digitallogic
adder
Page:
1
2
next »
Quick search syntax
tags
tag:apple
author
user:martin
title
title:apple
content
content:apple
exclude
tag:apple
force match
+apple
views
views:100
score
score:10
answers
answers:2
is accepted
isaccepted:true
is closed
isclosed:true
Recent Posts
kvs pgt
Algorithms GO Classroom
Programming and DS GO Classroom
Discrete Mathematics GO Classroom
Digital Logic GO Classroom
Follow @csegate
Gatecse
Recent questions tagged adder
Recent Blog Comments
@Arjun sir how to remove such post? should i hide...
[email protected]
.Plz do share @Sanjay sharma
Please post it as question
This is blog area post it as question
[email protected]
39,749
questions
46,765
answers
140,656
comments
58,513
users