6 votes 6 votes The switching expression corresponding to $f(\text{A, B, C, D}) = \Sigma(1, 4, 5, 9, 11, 12)$ is BC'D' + A'C'D + AB'D ABC' + ACD + B'C'D ACD' + A'BC' + AC'D' A'BD + ACD' + BCD' Digital Logic isro2009 digital-logic boolean-algebra + – Desert_Warrior asked Jun 3, 2016 • edited Dec 4, 2022 by Lakshman Bhaiya Desert_Warrior 2.6k views answer comment Share Follow See 1 comment See all 1 1 comment reply naga praveen commented Jun 24, 2016 reply Follow Share Please correct the option A - it should be BC'D' + A'C'D + AB'D 0 votes 0 votes Please log in or register to add a comment.
Best answer 6 votes 6 votes =BC'D'+A'C'D+AB'D So Option A shivanisrivarshini answered Jun 3, 2016 • selected Jun 24, 2016 by ManojK shivanisrivarshini comment Share Follow See all 2 Comments See all 2 2 Comments reply Desert_Warrior commented Jun 3, 2016 reply Follow Share I have a question. Why did you ignore pair (4,5) and pair (1,9)? 0 votes 0 votes shivanisrivarshini commented Jun 3, 2016 reply Follow Share suppose u paired 4,5 what about 12 to pair up 12 again u need to pair it with 4 no other possible way so u have to pair as 4,5 and 4,12 why to pair 4 twice as we have other choice to pair same as 4,5 1,9 is paired then 11 will be alone so again it has to be paired with 9 no other way so we try to pair just once if we have choice 0 votes 0 votes Please log in or register to add a comment.