nptel assignment

Question

is given ans correct ?

Comments

since A=1  , X must be fixed to  0 always (irrespective of other input Y  as (1+anything )’=0

now B input is replaced by 10101010…

so B+X= 1+0 =1  (so 1’=0)

then 0+0 =0        (0’ =1)

then 1+0=1        (1’=0)

and so on  so y should be 010101…

so none seems to be true

Answer 1

Suppose start from X=1, Y= 1

A and B is also 1 respectively

now X will be 0 as nor(1,1) will be 0

this 0 will also be fed with B and now when B is 1 nor(0,1) will be 0 i.e. Y = 0

this A is 1 Y is 0, nor(1,0) is 0 i.e X is 0

now X is 0 and B is like 10101010101010 in this sequence

this time B has to take 0

Nor(0,0) will be 1 i..e Y will be 1

X will be 0 and Y will be 0 and so on

Comments

WELL EXPLAINED ,THANX