Digital Electronics - Flip-Flops - Discussion
Discussion Forum : Flip-Flops - General Questions (Q.No. 27)
27.
A J-K flip-flop with J = 1 and K = 1 has a 20 kHz clock input. The Q output is ________.
Discussion:
25 comments Page 2 of 3.
Priyanka said:
9 years ago
Excellent @Shreyas.
Shreyas sinha said:
9 years ago
O/p frequency = i/p freq / 2^n ; where n is the number of F/Fs used.
Jk flip-flop has 2 flipflop s master and slave so according to that,
Op freq = 20 / 2^1 ; 2^ (n-1) < n > 2^n.
= 10 Hz.
Jk flip-flop has 2 flipflop s master and slave so according to that,
Op freq = 20 / 2^1 ; 2^ (n-1) < n > 2^n.
= 10 Hz.
Shreyas sinha said:
9 years ago
Here, there is no mention of master-slave jk flip-flop (has 2 flip-flops ), its just jk flip-flop(just 1 flip-flop) so therefore, there is only one flip-flop.
O/p freq = i/p freq /2^n ; n=1.
= 20 / 2 = 10 Hz.
O/p freq = i/p freq /2^n ; n=1.
= 20 / 2 = 10 Hz.
Prince said:
1 decade ago
J K flip flop o/p toggles if input is 1,1
Faisal said:
1 decade ago
What will happen to the output frequency if j=0 and k=0?
Pravin dalvadi said:
1 decade ago
j=0 , k=0------------> No change state.
j=1 , k=0------------> Set condition means output = 1.
j=0 , k=1------------> Reset condition means output = 0.
j=1 , k=1 -----------> Toggle.
j=1 , k=0------------> Set condition means output = 1.
j=0 , k=1------------> Reset condition means output = 0.
j=1 , k=1 -----------> Toggle.
Stuaan said:
1 decade ago
@Satyapriya is rightly said when the j-k flip flop has two internal flip flop one is master and another one is slave so the output frequency can be achieve half frequency of the input.
Neetu said:
1 decade ago
@Tulasiram:
j= 0,k=0------->previous o/p.
j= 0,k=1--------->0.
j=1 ,k=0---------->1.
j= 1,k=1---------->toggle.
j= 0,k=0------->previous o/p.
j= 0,k=1--------->0.
j=1 ,k=0---------->1.
j= 1,k=1---------->toggle.
Tulasiram said:
1 decade ago
What will be the output for j=1, k=0; j=0, k=1?
Satyapriya said:
1 decade ago
As one flip flop is used so there is 2 states available.so 20/2=10hz frequency avail; able at the output. Am i right or wrong please someone replay.
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