Register

Virtual Gate Test Series: Digital Logic - Ripple Carry Adder

• edited by
965 views
0 votes
0 votes

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.

  1. S1 only
  2. S2 only
  3. Both
  4. None of these
• edited by
User Avatar

1 Answer

5 votes
5 votes

S1: Carry lookahead adder is faster compared to a ripple carry adder- TRUE

Since in CLA adder,carry will be calculated in the same time(cycle) and each and every bit need not wait for the carry from addition of previous bit

S2: The cost is higher for a carry lookahead adder compared to a ripple carry adder-TRUE

Since CLA adder requires more AND and OR gates than the ripple carry adder,the cost will be high

(C) Both are correct

User Avatar
Voting & Accepting an answer helps improve the community
← PreviousNext →
← Previous in categoryNext in category →

Related questions

2 votes
2 votes
1 answer
2
sh!va asked Jul 16, 2016
690 views
Digital Logic Carry look ahead adder v/s ripple carry addrer
Which of the following statements is/are true? S1: Carry look ahead adder is faster compared to a ripple carry adder. S2: The cost is higher for a carry look ahead adder compared to a ripple carry adder. S1 only S2 only Both None of these
Which of the following statements is/are true?S1: Carry look ahead adder is faster compared to a ripple carry adder.S2: The cost is higher for a carry look ahead adder co...
User Avatar
1 votes
1 votes
2 answers
3
Gupta731 asked Nov 6, 2018
612 views
Gateforum Test Series: Digital Logic - Adder
User Avatar
0 votes
0 votes
3 answers
4
shivangi5 asked Dec 4, 2017
1,360 views
MadeEasy Test Series: Digital Logic - Adder
A 1-bit full adder circuit takes 5 ns to generate the carry-out bit and 10 ns for the sum-bit. When 4, 1-bit full adders are cascaded, the maximum rate of additions per second will be _______ × 107.
A 1-bit full adder circuit takes 5 ns to generate the carry-out bit and 10 ns for the sum-bit. When 4, 1-bit full adders are cascaded, the maximum rate of additions per s...
User Avatar
Link Copied!