0 votes 0 votes The internal of a demux is: It contains a NOT and an AND. Then, why is it not universal? Using demorgans law can't we get OR? Digital Logic digital-logic digital-circuits mux-demux + – Purple asked Jan 27, 2016 • edited Jul 5, 2019 by Cristine Purple 1.9k views answer comment Share Follow See all 6 Comments See all 6 6 Comments reply Show 3 previous comments Purple commented Jan 27, 2016 reply Follow Share Oh, Thank you sir. So, since F can have 2 values, 0 or 1, hence its not a universal ckt. If we fix the value of F=1, then it becomes a universal ckt. This makes a decoder a universal ckt? 0 votes 0 votes Praveen Saini commented Jan 27, 2016 reply Follow Share yes , decoder is ... 1 votes 1 votes mcjoshi commented Sep 6, 2016 reply Follow Share @praveen sir, with decoder we also require an additional OR gate to make it universal. Am i right ? 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes Demux is not a universal gate as it has only 1 input line, hence boolean expression can be implemented. If we use select lines as input ,then it becomes decoder. Deepika Bagaria answered Jan 28, 2016 Deepika Bagaria comment Share Follow See all 0 reply Please log in or register to add a comment.
