0 votes 0 votes minimum mod bimary up counter which counts {0,1,8,64} Shashi Shekhar 1 asked Sep 1, 2018 Shashi Shekhar 1 615 views answer comment Share Follow See all 15 Comments See all 15 15 Comments reply Magma commented Sep 1, 2018 reply Follow Share I think the answer should be 6 0 votes 0 votes MiNiPanda commented Sep 1, 2018 reply Follow Share Magma atleast 7 bits are required to represent 64.. I think with help of preset and clr we can get the sequence..but then I am not sure..and it is like Johnson counter.. I don't understand how up counter can skip so many sequences because the counting sequence of asynchronous counters are continuous.. synchronous can be random.. 1 votes 1 votes Shashi Shekhar 1 commented Sep 1, 2018 reply Follow Share What I am thinking, to represent 64 atleast 7 bits are required which takes no of states to be 2^7 but here our counting sequence has only 4 states , so what should I call this counter mod what 0 votes 0 votes MiNiPanda commented Sep 1, 2018 reply Follow Share Hmm..right. mod value indicates the number of distinct states that the counters are going through..in that way it should be mod-4.. if no. of f/fs are required then i think it is 7.. 1 votes 1 votes Shaik Masthan commented Sep 1, 2018 reply Follow Share if no. of f/fs are required then i think it is 7 Is there any rule that we should treat i/p sequence must be normal binary numbers? 0 votes 0 votes MiNiPanda commented Sep 1, 2018 reply Follow Share Shaik Masthan i didn't get you..can you please elaborate? 0 votes 0 votes Shaik Masthan commented Sep 1, 2018 reply Follow Share can we map 000 -> 0 001 -> 1 010 -> 8 100 -> 64 then only three bits is sufficient 0 votes 0 votes MiNiPanda commented Sep 1, 2018 reply Follow Share No I haven't heard of such mapping till now..but if you have then please share the link.. 0 votes 0 votes srestha commented Sep 1, 2018 reply Follow Share @Shaik then {0,1,8,64} and {0,1,2,4} having no difference 0 votes 0 votes Shaik Masthan commented Sep 1, 2018 reply Follow Share @srestha, mam but my concern is only on {0,1,8,64} we doesn't care about rest 0 votes 0 votes srestha commented Sep 1, 2018 reply Follow Share but it is not general for all case how do professor know, u applied this method? It will be a MCQ question right? 0 votes 0 votes Vikas Verma commented Sep 3, 2018 i edited by Vikas Verma Sep 3, 2018 reply Follow Share We can map the sequence like that when we just want a mod-4 counter. But when we want to use the output of the counter as an input to another circuit which is sequence sensitive (i.e. needs specifically 64 as I/P) then we cannot map the sequences like that. 1 votes 1 votes Shaik Masthan commented Sep 3, 2018 reply Follow Share @Vikas Verma but they didn't specify that " the output of the counter as an input " moreover, did you have any standard reference for it? 1 votes 1 votes Vikas Verma commented Sep 3, 2018 reply Follow Share Mentioning the sequence specifically usually indicates that it is necessarily supposed to be that way. Otherwise it would've been much easier to say Mod4 counter and writing the sequence will make a little sense. And, no such standard reference but just experience. 1 votes 1 votes Vikas Verma commented Sep 3, 2018 reply Follow Share Not sure if you'll find this convincing, but still, https://ti.uni-due.de/ti/en/education/teaching/ws1617/fce1/material/notesErratum1.pdf 1 votes 1 votes Please log in or register to add a comment.
0 votes 0 votes for designing consider the largest data in the input it is 64 for representing 64 7 bits is needed so mod 7 Pavan Karthik answered Sep 3, 2018 Pavan Karthik comment Share Follow See all 0 reply Please log in or register to add a comment.