2 votes 2 votes To implement a 5 bit binary adder, the minimum number of half adders required is ______________ A_i_$_h asked Jul 19, 2017 A_i_$_h 865 views answer comment Share Follow See all 4 Comments See all 4 4 Comments reply joshi_nitish commented Jul 19, 2017 reply Follow Share 9 ?? 0 votes 0 votes A_i_$_h commented Jul 19, 2017 reply Follow Share yes ! can u explain? 0 votes 0 votes joshi_nitish commented Jul 19, 2017 reply Follow Share since for LSB bit cin =0, it can be done with half adder for rest 4 bits full adders are required... so in minimum total adders are required are 4 full adders + 1 half adder... now, one full adder can be implemented with 2 half adders, so total half adders required are 4*2 + 1= 9.. 4 votes 4 votes A_i_$_h commented Jul 19, 2017 reply Follow Share thank you :) 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes 5 bit binary adder can be implemented using 4 full adder and 1 one half adder. Further, these 4 half adders can be implemented using 8 half adders. Total no of half adders = 9 Raushank2 answered Jul 19, 2017 Raushank2 comment Share Follow See all 2 Comments See all 2 2 Comments reply $ruthi commented Jul 20, 2017 reply Follow Share Yes, that's true and the simple formula for this is for n- bit binary adder we require (2n-1) half adders and (n-1) OR gates or n full adders. 1 votes 1 votes tonystark007 commented Jan 3, 2018 reply Follow Share @raushank2 can you give any reference? 0 votes 0 votes Please log in or register to add a comment.